I really like having pets as decorations, but sometimes I want to add a pet I don't have which is frustrating. I have to spend tons of gold for the chance to get that body type, then if I want more I have to wait for the hatching timer to reset and then spend more gold.
What I want is to add some vendor who sells pets that aren't pets. They'll act and move around like normal pets but you can't equip them and they won't have a pedigree to distinguish them from normal pets.