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My dog won't eat, drinks excessively, and has jaw/throat lumps.

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 8 years and 8 months old | 140 lbs

Bailey is 9 years old, German Shepherd Mastiff mix. He hasn't eaten in 2 weeks and drinks excessively. He has gone a little more than a week without eating before. Excessive drinking is new. However, a couple days ago I noticed his mouth and jaw area, on his left side, became swollen along with redness. His left side also is dropping. I also noticed 3 large lumps ( the size of the palm of my hand) wrapping around his throat from jaw to jaw. He tried to eat today and threw it up immediately.

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1 Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on September 4th, 2017

HI, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Bailey! Bailey needs to see your vet ASAP tomorrow. The most common reason for the swelling under his jaw are enlarged lymph nodes. With the increased thirst and swelling under his neck I am concerned he has a cancer called Lymphoma. He will need a physical exam and blood work. The most common cause of increased thirst with lymphoma is an increased calcium. Other causes for the swelling under his neck could be an allergic reaction, swollen salivary glands or lymph nodes that are swollen from something else other than cancer (reactive to something in his mouth or ears). The facial dropping sounds neurologic. 2 weeks is a long time to not eat. I would call tuesday when your Vet opens to get an appointment. I hope this helps and I wish you and Bailey the best of luck!

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