Help with sick kitten (not mine) *update #8*
A co-workers daughter has two 8 week old foster kittens and one of them is not doing well. He seems to eat a lot, he doesn't drink excessively, his poop is orange and runny and super stinky (sorry for the description), fur is thinning - but no baldness, and his tummy is hard and swollen.
He has been to the vet and they did one dose of deworm meds. He seems to be as playful as usual.
The other kitty is showing no signs of these ailments, at all.
Does anyone have any idea what this could be?