Looking For A Pet Sitter For 1 Dog In Dallas

This is for my 80yr old mothers small dog. There is a dog park in the senior center where my mom lives. My mom is no longer able to care for the dog who can be aggressive towards other dogs if she senses the other dog is aggressive. I would need someone to simply walk the dog from my moms apt to either dog park area - one is closer but if there are other dogs loose I will take my moms dog to the other dog park to avoid confrontations of aggression. The dog is small but fat! Lol