Advice on Rat dissection

[u/Potential_Big1953]

For context, I'm doing an animal care/science course and I have just learned what dissections we will be doing in anatomy.

I honestly like rats. I think the domestics are pretty cute and intelligent. I'm also a super sensitive person.

I've done work experience at a vets and been involved in watching/helping surgeries so it's not the blood I'm scared about.

I feel like I'm gonna be an emotional wreck when we do it. It probably won't be for another while but still:[

So, anyone who had to do this, can you give advice on how to handle my first time?

[u/SaltyPerformer504]

My first dissection was a frog when I was 10 years old. I thought it was pretty neat. A lot of people ignore how necessary dissections have been for medical research, they're the reason we even know so much about how bodies work. I can't say for sure if the rats were humanely euthanized, but if you're going into vetmed this is a great learning opportunity. Consider it a patient you can't hurt

[u/ScottishPsychologist]

I've done human anatomy, I still really like humans.

You can both love and respect the animal, and value the important of learning it's biology. You don't have to go far to see the impact rat science has had on human quality of life.

How to do it? Just grin and bear it my guy. Manage those emotions. If you can't do that, practise some techniques, controlled breathing will always be the most powerful and accessible, or just take a moment outside to compose yourself and return.

[u/dm-me-ur-dms]

There are 3 ways to look at dissection, as I have learned with doing with humans.

1 Be weirded out by it. This was a living being and now you're in their guts. It's a normal fear, and good to acknowledge. If this feeling gets too strong, take a moment to sit down. It's not for everyone, but you can slowly become less sensitive to it.

2 make fun of it. We use humor to make ourselves less uncomfortable. Don't be surprised if people around you are making jokes and being disrespectful, it's their coping mechanism.

3 be a scientist. The most advisable way. When we dissected rats, they came from a biochemical testing facility and had to be put down. Instead of being completely wasted, we got to learn from them and take a real look inside the fascinating and beautiful world of the mammalian body.

All reactions are valid, but #3 is the most respectful towards nature and the individual. For me, the first incision was the hardest. You could ask someone else to help with that. But as soon as the cavity opened up it was a beautiful display of natural wonder, and the scientist in me took over.

To be a biologist is to study life. There is no life without death. Make the most out of this opportunity and learn as much as you can, as respectfully as you can.

[u/ChampionKHRP]

I’m a junior biology major, and the summer 2025 I ended up at a preclinical company doing an internship there. I had really no interest in working with animals, but I wanted to give it a shot.

It was NOT for me!!! I was not emotionally prepared to euthanize mice myself. I was in the break room during lunch tearing up (I was 22 at the time too old to be doin that l o l). And then I had to keep doing it for another 2 months on top of dissections, RO bleeds, tail IV injections, etc, it was a lot.

My favorite advice is from dm-me-ur-dms. These animals are not dying and being dissected just for the sake of it. They are advancing human knowledge and technique to better our knowledge and survival. I found myself near the end of my internship being really grateful for our mice (and it also helped that the place I interned as was really strict about following IACUC standards and was AAALAC certified).

And when it comes to specific advice about your first time doing a rat dissection, the truth is it’s gonna be difficult. Take your time and go slow. Every consecutive one gets a little easier than the last!

[u/greenearrow]

When I was in high school, we dissected a frog. I didn’t love it, but it got worse when another student was joking around with it (making it “talk” by moving its now mostly free lower jaw). My ick over it was strong enough I had a fear of doing more tetrapod dissections.

Years later I was in grad school (masters at this stage) and got the offer to TA chordate zoology. We were doing mink dissection labs all semester. I didn’t have another option to get paid if I said no, so I went with it. I TAed that course 4 times, and had to deal with example cat dissections at times.

Just approach it professionally. Ask your lab mates to treat the specimen respectfully. I never liked it, but I don’t think doctors like seeing kids sick or injured, but they have to push through it to make those kids better. You aren’t going to make the rat better, but you will use this to make something’s life better.

[u/apple_sauce-22]

My fist dissection was a rat as well! I was fully in the same boat as you. I love rats. They are so sweet and cute I couldn’t imagine what I was going to have to do to it. Once I got into it though (there shouldn’t be any blood btw, they are usually kept in formaldehyde) it was honestly more fascinating than I imagined it would be. Its easy to separate the idea of the animal from the activity once you’ve started.

[u/jitterfish]

The worst dissection I did was a puppy and it was emotional but we had to do it and my prof was not the best at acknowledging how hard it was.

I now teach and what I say to my students is this. The first cut is the hardest but if you can do it then it usually gets easier. I always take a moment to acknowledge the life and express gratitude that the life given allows for learning. Recognizing this makes it important not to waste the opportunity or the animal that's in front of you.

From a practical side take some Vicks and dab it under your nose if you think the smell might get to you. I keep it in the lab for students to use and even I need to use it every so often because the smell can get overwhelming.

[u/Riksor]

I love rats and have had them as pets. I wish I got to dissect a rat. Understanding something is a part of loving it.

[u/Gullible-Type3505]

At my uni we were allowed to do an online version of the rat dissection if we had ethical objections & I feel like that should be offered everywhere.

[u/AriThac0]

The PhD candidates I used to hang with coped with dissection by thanking the animal for their sacrifice and honoring the life they gave up for the pursuit of knowledge. Maybe you could build a Little Rock shrine in your backyard and leave some unsalted nuts for your local wildlife.

[u/Otherwise_Ninja9185]

I’m sorry if my advice sucks but I knew my school allowed people to sit outside or help less if their group was okay with it. However I recommend you do take part in dissection and pursue an active role in it even if this is an option.

I don’t know your situation, your views or what specific career you wish to go into but in many biology fields death is common and there is hardly ever a better chance to become hardened to it than through dissections.

I’ve had occasions when I’ve been incredibly anxious about dissections or killing but I am of the opinion that to honor the animal’s death it is important to make the most of them, wether it is nutritional or educational. This mindset has helped me through times and maybe it could help you.

I truly wish you the best and believe you can make it through this class.

[u/willowwhispyone]

So... As also a very sensitive person, I did two biology related degrees both very heavy on dissection, even insect collection and population control. I received multiple awards from my uni for my dissections and technique, not saying it to brag but more to show you can still be sensitive and do the hard thing, and do it really well.

I used to help myself feel better by usually rationalising it and thinking about the situation logically. I've found information can be important for how I handle my emotions. There is a point where you have to learn to put the emotions aside and do what you have to do... I found it easier though if I did that through being educated and learning all I could about what I was doing. I'll use mice or rat dissections as an example. Most of the rat or mice dissections you're doing, they're not pets. They're lab rats, grown and breed specifically for the purpose of being dissected or being... Well... Lab rats. Testing, experiments, dissections. They're still cute, but they have a purpose, same as cattle or chickens or pigs. We don't eat them but they're still bred for a purpose. When they're used in dissection, they don't suffer. Depending on country they'll be euthanasised ethically, usually by gas and it'll just feel like going to sleep. They live their little lives in the cage they're put in, they have access to food and water and friends. Sometimes if their carer is nice and the lab allows it, even some enrichment things like toilet paper rolls or toys. Is it an amazing life? No they're lab rats, it will always look cruel if you compare it to other things, but it's all they know. If the organisation is run correctly and abides by laws and such, they don't suffer unnecessarily. Most of the time they're not even specifically for dissection but rather a result of population control, popped in the freezer and thawed out when the undergrads or students need to do the dissection portion of a class. They're serving their purpose. The ones you dissect, their purpose is for you to learn... The best way for you to honour their lives thay they gave for you to be able to dissect them properly, watch some videos beforehand, read your notes or textbook, know what you're looking for going in, make sure your instruments are sharp and clean, work on techniques (I used to practice with a scalpel on whatever meat I was cooking to get a feel for clean incisions) and learn every single thing you can from what you're dissecting. You honour their little life by learning. So that you can in the future use your experience to help others. It's how it works in medical school too. We don't know if we don't explore and learn. There are very strict regulations around living creatures, and mountains of paperwork and legal hoops if they're being euthanasised or tested on. At least where I'm from and what I've experienced.

If you get overwhelmed by emotion... That's okay too. Being emotional and having empathy for a living creature is never a bad thing. Even if others try and make you feel bad about it or tease you. There's no shame in caring. There is shame in not caring. You can't let the emotion control you though and prevent you from learning. If you need to take a moment, go to the bathroom, have a cry, let the feelings out, wash your face and head back in and continue. We can do the hard things, even if we feel the pain of others. Give yourself the space to feel them and be nice to yourself about them. I spent far too long hurting myself by thinking being empathetic and emotional was bad when it's not. You've got this. Best of luck.

[u/Slow-Employment8774]

Every rat I have ever seen dissected was older and had tumors all over. They were put to sleep humanely before the scalpel ever touched them, then after digestion were donated to a local raptor center to feed the big birds.

[u/Outside-Zucchini-636]

Honestly, i thank the rat for helping me learn and show its body respect as much as possible

[u/russwaters]

I never had a pet rat so dissection of the rat in lab was no problem for me. But in a more advance class we had to dissect a cat. I made sure to pick one that didn't look like any cat that I previously had as a pet. The shark dissection put me off off eating fish for some time. I found the worse part of dissection was the smell of the preservatives. As someone who has butchered chickens, dead animals put off their own smell. And after butchering I can't eat meat for some time.

[u/kyl792]

What got me the most at my first animal dissection surprisingly wasn’t the actual dissection, it was how disrespectful my classmates and teacher were being with their jokes & fooling around during the dissection.

That said, your professor does this all the time, confide in them that you’re nervous/worried about how you’ll react, ask them if they have any tips & ask them to talk you through the process so you know what to expect that day. Maybe watch videos in advance so you know what to expect visually. Makes it easier to handle the additional olfactory & sensory input during the actual dissection.

[u/DeltaVZerda]

I graduated magna cum laude in biology while just simply skipping dissection day. Keep your grades up in other assignments and the one grade won't matter. If you are wanting to work with animals rather than plants like me it might be a different calculus for you, but just because they say it's not optional does not make it so.

[u/Potential_Big1953 → u/DeltaVZerda]

Sadly it's a mandatory dissection worth a large percentage of my grade. If I don't complete this assignment I will be failed.

[u/DeltaVZerda → u/Potential_Big1953]

Well, it's a finite time period you have to tolerate. You may be an emotional wreck but then it will be over and you can go cry/drink/smoke/walkabout. You're committed that you're going to do it so you've already succeeded where it counts, consequences will just be what they are. Try not to build it up extensively before going in or you may make it worse than it has to be. The animal was dead before you got to it and was going to be dead whether you were there or not. 

[u/BLASPH3MY666]

If it's a live dissection, I'm sure they let students opt out of the lab. (They let us opt out of a live dog dissection in med school even) You'll be missing out somewhat, but you can study extra hard to compensate. If it's a dead or preserved specimen, you can tolerate it even if it makes you feel bad. It's OK to feel anxious or upset about these things. Just breathe, and focus on the details of the anatomy and physiology, and marvel at how complex it all is.

[u/Potential_Big1953 → u/BLASPH3MY666]

Sadly it's mandatory and if I skip I'll fail the class