I do not have any formal training but I have tons of personal experience. My childhood dog, Goo, is a 10 y/o pitty who lives with my mom. I see him often. My mom’s house doesn’t have a fenced in yard so he gets multiple walks a day and many potty breaks. I currently live with my partner and his (our) two girls, Maisy and Bula. They are a senior supermutt and 5y/o pitt lab mix. I pet sat them numerous times before I lived with them. I’ve walked them together countless times. I also pet sit my neighbors dog Riley. She is a 7y/o German Shepherd who loves to play and chase squirrels. I walk her many times when I watch her and exercise her on a regular schedule. She’s such a sweetie, she makes it pretty each on me as long as she doesn’t lock on a squirrel. These are just a couple examples of my personal experience. I have also dog and cat sat for family and friend.