Hi there. I don't know about special focusing on pets, but a lady posts fairly regularly animals. She hangs out on other sites a lot and so probably could turn you on to some sites that have such challenges. At least she might be helpful if she sees this thread. Her user name here is Enug.

Yeah, a stylus makes a world of difference. Glad you upgraded yourself. Enjoy. Your puppy picture shows your intention very clearly. Would love to see more when you want to post them.