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Why is my dog losing weight, always thirsty, hungry, and peeing?

Updated on September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | unneutered | 1 year and 3 months old

THe past few weeks Marley has been losing weight he hasn’t got worms or fleas or anything I feed him more than the recommended amount and he still losing weight he eats his own dinner and then comes to the table and everyone will pass him down scraps he’s also uncontrollably thirsty and he’s always hungry last night I was holding him and he peed all over me but he’s house trained

2 Answers

Most Helpful Answer

Dr. Leigh, DVM

Answered By Dr. Leigh, DVM

Veterinarian

Published on January 11th, 2018

I am concerned that Marley is uncontrollable thirsty and is losing weight. He could have an infection, kidney disease, liver disease, diabetes, etc. so he should be examined by a vet to determine the cause. Your vet can run a urinalysis and blood work to help diagnose and treat the problem. Please call your vet and schedule an appointment.
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Related Answers from Veterinarians

  • Answered By Stephanie Echols, DVM

    Veterinarian

    Published on January 15th, 2018

    Thanks for using Petco Pet Education Center, formerly Petcoach! I recommend taking Lil Bit to a vet for an exam. They will likely recommend blood work and a urinalysis to rule out a urinary tract infection, kidney disease, or diabetes. Once a diagnosis is made, they should be able to get him a treatment plan. Good luck and kisses to Lil Bit!

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    1Pet Parents found this answer helpful

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