Chester, you are such a beautiful Appaloosa horse! It doesn't sound like your arthritis has slowed you down too much- just in a few areas. How wonderful that you and your person have such a terrific relationship -- you have fun playing tag, you work together well, sharing love and fun! I hope you have a wonderful day as the Pet of the Day!
Edited to add: Chester, I have to admit your amazing coat pattern makes me think of - vanilla ice cream with chocolate chips! In the third picture, your tail looks so long and wavy! Please have your lady give you an extra little kiss from me: *kiss*!