答案

I think raising pets brings bunches of benefits, especially for elderly people. First of all, pets like cats or dogs can be good companies. You know, lots of elderly people live along after their children grow into adults and move out. Majority of them might not be able to see their children for the whole year. So, if they raise pets, they can view these pets as their kids and enjoy his/her happy time with them. Furthermore, raising pets can enable the elderly to do more exercise and strengthen their body. For instance, they need to walk the dog every day. During this process, they can take a walk with their pets, which is absolutely a good exercise.