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My dog has a new, large lump on his leg. When should I call the vet?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male

Hey there! I'm babysitting my sisters dogs right now. I've been taking care of them for like a week now and just today I noticed on one of the dogs he has what looks like a fatty tumor on his leg. I feel like I definitely should have noticed it by now because it is rather large and noticeable. It feels like it popped up overnight. My question is do you feel like it is cause for immediate veterinary attention. I will post a picture.

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1 Answer

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Answered By Leann Tana

Published on July 1st, 2021

Hello! I can’t tell from the picture exactly what is going on but I can still definitely tell you the things that would push me to take Charlie in. 1) If the mass changes, measure the size of the mass, if it changes size rapidly, loses the fur over it, or starts producing discharge, time to call the vet. 2) If his behavior changes (more tired, decreased appetite, limping or licking at area) Otherwise, I would just watch it and let the owners know when they get back.

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