If your bulldog is stressed or has low blood sugar, he might start shaking his head (either side to side or up and down). Although your bulldog will be conscious while it’s happening, the shaking will appear involuntary. Give your dog honey or something sweet to raise his blood sugar, but if this doesn’t work, take him to the vet.
When a bulldog puppy is born, she inherits a demodex mite from her mom. The mite cannot be transferred to other dogs or to humans and can only be given from mother bulldog to baby. It lives in the hair follicles, unseen;but most of the time it isn’t harmful. If your Bulldog’s immune system is weakened, however, she can develop demodedic mange (i.e, bald spots and patches of red, raw-looking skin). In the localized version of demodedic mange, the rash-like symptoms will be limited to the head, neck and legs and will eventually clear up on its own. In the generalized version, the red patches may cover the entire body. If this is the case, check with your vet before breeding a dog who has generalized mange, because it might be inheritable.
If your bulldog has an inverted tail or screw tail, he might be particularly prone to developing a skin infection underneath the skin folds on his tail. To prevent this, be sure to clean under the folds on a regular basis.