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My pet bunny is losing a lot of weight. What are the common causes?

Updated On September 23rd, 2025

Pet's info: Small Animal | Rabbit | Female | unspayed

One of my little bunnies has lost a lot of weight. What could be the cause?

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on November 27th, 2017

Hello, sorry to hear that your bunny is unwell. There are many causes that can result in loss of appetite, & subsequent weight loss, really too many to discuss here. But diet imbalances, dental problems, infections, hairballs, gastrointestinal blockages, & cancer can all cause weight loss. Your bunny needs a hands on exam with a veterinarian to discover the reason for the weight loss, & hopefully get things turned around quickly. Thank you for using Petco Pet Education Center, formerly Petcoach.

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