I'm a 5th year senior in college. I never lived in a dorm, I've always had my own place (with the exception of my sophmore year where I lived with my parents) so I could have had a dog at any time. I did work full time so I always felt it was unfair for me to have a dog until closer to graduation time. Some semesters are crazy ( like when I've taken 18-22 credits & worked full time) some semesters are a breeze. I don't think that, with the exception of Freshman year they are any harder or easier as a rule of thumb. It's all up to you when you structure your classes. Taking summer classes helps so you have more time during the rest of the year. I'm pretty sure that if you're committed to bringing your furbaby along, you can make it work. It's a huge responsibility but it can be done. Just make sure your parents are ok with you living off campus! I'm sure you wouldn't want to miss 3 years of fun with your baby. Great looking ahead tho! Good luck!