I am worried about my dwarf hamster?

Cats are not suitable companions for guinea pigs. Guinea pigs need to be with one of their own kind and no matter how docile you cats seem, they still pose a major risk to any guinea pigs. You should wait until you can afford two guinea pigs.

Spend time with your cats and enjoy having them. You could consider getting a hamster instead, which might be more within your price range, Please make sure you know everything you need to before getting guinea pigs: https://www.theguineapigforum.co.uk/thre... and http://www.guinealynx.info/healthycavy.h...

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