neosporosis, caused by an organism called Neospora caninum.
Neosporosis was thought to be uniformly fatal. Not necessarily because dogs couldn’t live with the organism but because many couldn’t and the rest were usually euthanized due to the severe disabilities induced by the parasite. To the best of anyone’s knowledge at the time, Sandy,seen in picture,was the only adult dog functioning happily as a normal pet with neosporosis.  Sandy was severely crippled. She had rigid rear limbs that were terribly atrophied, almost making her appear to be walking with aid of crutches in the rear. She didn’t know she was supposed to be too disabled to function so she was doing it anyway.

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