Your animals are very cute. (Don't take this wrong, but I'm personally not a fan of "cute" -- but that doesn't mean you don't do it well and that most people won't love it, because I suspect they will!) The dog is very nicely formed, the proportions accurate, the stance lifelike, the expression (considering the minimalism of the style) is very sweet. The particular angle of view of the horse makes any critique more difficult because you just see the face. But you obviously really LOOK at the animals and have the talent to capture something special about them, which is great!
You might like Katherine Dewey's book on sculpting animals. If you find it, don't do what I do (to Kathy's distain!!) by going to the cat at the end first! The book is meant as a progressive sculpting program, and you should start at the beginning and work your way through to actually learn the most.
Keep up the good work! (Both the sculpting AND the animal rescue support!)