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Puppy has a crusty lump on neck with a bug. Is it fleas? What to do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | unneutered | 1 month and 13 days old | 0 lbs

My puppy is 7 weeks old and he has a soft lump on his skin on the back of his neck area. He Just had his first vaccine. I don't think that is the cause. This lump is crusty and it was red 2 days ago. Looks like a scab but today it's turning yellow. The lump is getting smaller & when I looked at the lump and scab area on his neck there was a tiny small brown bug in that spot. could be one flea idk.. i tried to remove it the bug moved in his fur. What is it and Do I need to get him to a vet ?

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1 Answer

Most Helpful Answer

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Answered By Jenny, DVM

Veterinarian

Published on October 6th, 2017

It does sound that is a flea you saw. It is not uncommon for puppies to have fleas and have scabs and bumps from scratching from the irritation of a flea bite. You can try a bath in baby shampoo or dawn dish soap as this help kills fleas on puppies to young for flea shampoos and flea prevention. You can gently brush the scab to loosen the debris and apply Neosporin to it when dry. You can talk to your vet about proper flea control base on his age and weight to prevent this in the future

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