Do you ever just have so much work you that you feel you'll never get done? Or have something due in a few hours but feel hopeless. Find an animal. They will make you calmer and help you get through it.
I say this for a few reasons the one reason I feel that is most important is that they are a good distraction. Yes distractions aren't always good but this one is. You can sill do your work and take a glimpse at whatever animal that is near you. In this glimpse you'll most likely get a chuckle or two in because animals are funny.
Another way they help is that sometimes they'll snuggle on you. You could be typing a paper with a cat or dog or guinea pig right on your lap! You can pet them as you type and it will bring a sense of calmness to you.
Another reason why having an animal helps is because sometimes when you need a break they will sit on your stuff. I am not kidding. They'll see you need a break and just sit on your laptop or whatever you're working on.
If you need some stress relief in college get an animal, it helps.