She has had X-rays, U-S, probably every blood test known to the canine and human world. She goes to Texas A&M Teaching Hospital so I believe she is in good hands.
She was feral when I first met her. Took me a week to trap her (tranquilizers didn't work on her) eight years ago. I estimated she was two when she came home with me June 2001. She started facial graying in 05 which sort of confirms my age estimate for her.
She is marked like a black and white Border Collie, which I originally thought she was mixed with though I had no idea what the other parts are. I have since decided she may be part Siberian Husky due to her coat. She has a medium length slick top coat and a fine undercoat which is shed several times each year here in Texas. She will also howl like the huskies I had many years ago. She is a good hunter, tracker, fighter and has no interest in herding. She lives in the house with a Border Collie, two cats and two birds. The cats are indoors only, the birds are in their own room.
She is allowed to run loose in the pasture (when I am with her) where there are Coyotes, Bob Cats, Rabbits, Skunks, Raccoons, Opossums, Armadillos, Horses, Cows, Turtles (which she loves for some reason), Squirrels (loves them too), Beaver, snakes, rats (rarely), Moles and various other wildlife. I have seen her make direct physical contact with Armadillo, Beaver, Squirrel, Turtles, Moles, and rats.
I did have a problem of Raccoons getting into my attic where they took up residence unbeknownst to me several years ago. They made a mess up there and I did see some fleas from them that got into the house. Could this be a source of her problem?
About a year after she arrived here she developed open pyometra, which was initially treated with AB's. It returned so I had her spayed. I was lucky it was the open type. Is it possible she could have stump pyometra? I believe this is difficult to diagnose and is often overlooked.
I've had the Border Collie tested and she is fine. She has also been spayed.
Thanks for the rapid and informative responses.