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Why is my hamster so aggressive and biting me when I reach into his cage?

Updated On September 23rd, 2025

Pet's info: Small Animal | Unknown - Small Animal | Male | 2 lbs

My hamster is very mean and aggressive. Everytime I put my hand in his cage he tries to bite me. I need to know why is he is so aggressive.

1 Answer

Most Helpful Answer

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Answered By Megan, DVM, CVA

Veterinarian

Published on April 28th, 2018

Unfortunately, some hamsters are more fearful and aggressive than others. This is just their personality. I would try to offer him daily treats but avoid touching him for awhile. Over time, slowly just try to pet him but do not antagonize him or pick him up. If he lets you pet him, give him another treat. Hopefully, over time, he will begin to warm up to you but unfortunately, not all do.

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