My 10 year old female Boxer has a huge lump on her back right on her spine that is huge, 1 inch high x 3 inches long x 3 inches wide. It is slightly moveable, & doesn't have much hair on it. The vet tested it with a needle & was told it was a cottage cheese-like substance and not to worry about it. It keeps growing, though, so I wonder if I should have it surgically removed.
This is a good question for your vet. If your pet is healthy and the mass is a growing, I would consider surgery. This is a decision you and your vet should make together. vetcare