dog hemoroids on the exterior of a chihuahuas rectum he is thirteen years old and...

[henpecked285]

...has a large one on his butt? he has had this thing that looks like a hemmoroid now for a year or so ans it it growing

 

[Gree]

take him to the Vet, could be a hemmeroid, or cancer. Is it bothering your dog or not? If it is painfull it might stop him from pooing and this might lead to more health issues. best to get it checked out