There are many advantages to having a pet. For example, taking care of a pet can teach people responsibility, which is new to many university students. In addition, pets can keep people company and are well-known for making people happy.
While there are many reasons for having a pet, keeping one illegally in the dorms can be problematic. First of all, some students may be allergic to pets. Secondly, some dorm mates may not care for the way the pet smells. Thirdly, many pets are loud and may disturb the other residents in your dorm or hall.
For many universities, students keeping pets in the dormitories is against the rules. Despite this, some students choose to have a pet at university. However, I don't believe that it's a good idea to keep a pet in the dormitories.
advantages 有利条件;有利因素;优势 (advantages是advantage的复数形式)
taking care of照顾;对付，处理
well-known [ˈwɛlˈnəʊn] 著名的，众所周知的