As you might imagine, the apple-head Chihuahua has a somewhat apple ... you force all the dog’s internal structure into a smaller space. Teacup Chihuahuas often have brain issues, and many ...

They’ll need playtime and exercise to stay happy and healthy. Image credits: stella.and.bambi_thechichis Teacup Chihuahuas are the world’s tiniest dogs, but they have HUGE personalities!