Should I worry about a lump on my puppy's head? When to see a vet?

Question

Thor has developed a lump between his eyes on his head... Is it normal or? Pet's info: Dog | Mixed Breed Large (61lb +) | Male | unneutered | 3 months and 26 days old | 20 lbs

Kevin Sanada, DVM · Accepted Answer

First, great pictures and highlighting of the lump! This appears to be a fluid-filled lump. Usually puppies get these when they bang their head on something and then fluid accumulated under the skin. However, I do worry about congenital defects that could cause accumulation of CNS fluid under the skin. If Thor is otherwise acting and looking normal, then either way, it's not an emergency. If he is acting weird, then best to have a veterinarian check him out. If it was just a bump, then the swelling will start going down within a couple of days. If it continues to grow, then it would be concerning enough to make an appointment with a vet. An easy way to detect growth or shrinking is to draw around the edge to the swelling with a magic marker. It will look silly, but it's really easy to tell if the border of the swelling has moved. I hope this helps.

Should I worry about a lump on my puppy's head? When to see a vet?

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