What could cause a lump on a dogs shoulder?

Answer by  JAM87 (111)

A lump can be cause by a multitude of things, a few possibilities are cysts, tumors (fatty or cancerous), i'd advise bringing the dog to a vet.

Answer by  katharine (3981)

The lump could be a tumor. You should take your dog to the vet to see if the tumor is benign or cancerous. The vet can do a biopsy to see if it's serious.

Answer by  Camarko (44)

Vaccine reaction, malignant tumors, benign tumors, skin tags, epidermal growths, swelling due to blunt force injury, abscess, lipoma, Bony growths.

Answer by  kelsey24 (20)

Lots of things could, he could have injured it or maybe he has a tumor or inflammation. You should probably have a vet look at it if it seems to be bothering him.