styphilis

my dog has started cleaning up after himself and i'm not sure what to think of it. he sheds like something that sheds a lot. at least once a day, he walks around the house and eats the fur off the floor. if anyone knows why he does this or if a giant hairball is going to kill him, please let me know. maybe he learned it from my gecko, who sheds her skin and eats it about once a month. my animals are confused.