The symptoms you've described can have many causes, and all of they are pretty grim. Dogs tend to mask pain or malady far better than humans, as an injured dog in a wild pack is at risk, so if the animal is clearly displaying these symptoms, you have a real problem.
Describing what this could come from would take forever to explain, and wouldn't help, as I doubt you have the facilities to diagnose then treat whatever this is.
Please get this animal to a vet ASAP.
Take your dog to the vet immediately.
They cant have puppies.
A bitch that can no longer have pups because it has had its ovaries removed.
Then you need to have the dog examined by a veterinarian to find out why, and to have the dog treated.
When a dog bites another dog's back legs, it could be a sign of aggression or dominance. It may also be a way for the biting dog to establish control or show its superiority over the other dog.
you cant deletle nintendogs but you can simply go to the kennel and choose "donate" and then you can decide which dog you dont want anymore.
try craigslist or some breeder give away the old dogs that cant breed anymore
it means ur weird
if you are wanting to get a dog with 3 legs it may need madication, It might not get along with normal dogs, and you have to put all your attention to that dog you cant get a 3 legged dog if your working all the time, its no ordinary pet.
It means its a human dumbo. idiot
There are 4 legs on 1 dog normally
no leded dog