What could cause a sudden bump to appear on my dog?

Answer by  Jack56 (408)

A bump can either be cancerous or non-cancerous. Unfortunately, the sudden appearance usually means that it might spread throughout the skin. Therefore, the veterinarian would need to treat it immediately.

Answer by  Justbarb (98)

First check for ticks or, if inflamed, have the vet check on it. Benign fatty lumps are not unusual on some breeds, especially as they get older. It is a good idea to have your vet start a lump map, so new ones can be identified. If irregular or miscolored cancer is also possible.

Answer by  koti (205)

Bumps on dogs are called hot spots and are caused by allergens or allergic reactions. One of the most common allergic reaction is from flea bites. Dog will knaw, chew, lick and rub the itchy spot until the fur is rubbed out and a bump or sore is raised.

Answer by  answer17 (97)

It could be many things. It could be a bug bite, a bump from the dog hitting something, or something more serious. Take the dog to the vet right away.

Answer by  katharine (3981)

It could be a tumor that you didn't notice earlier. If this is the case you should take the dog to the vet to make sure it's not cancerous. If the bump did really just appear suddenly your dog could have been stung by a bug and had an allergic reaction, or it could an abscess.

Answer by  champaign9497 (11977)

It could be caused from a number of things one it could have been bitten by a bug or a fly may have laid an egg under the skin and a grub is growing the other thing it could be the dog may have bumped its self on something.

Answer by  Barbie87 (277)

A bump that suddenly appears could be a tumor. Keep an eye on it. Perhaps it will go away. If it doesn't go away, please see a vet.