I noticed a few days ago that Granville has got a lump under his chin Hes so skittish i cant really keep him still long enough to have a good feel of it. Believe me i've tried! What should i do? he doesnt seem like its bothering him at all and its not grown anymore, hes eating and drinking and still running on his wheel etc Do you think i should just keep an eye and if it starts to bother him then get him to a vet? Roborovski hammies are so small so i dont think there is anything a vet could do apart from put him to rest (id only do that if he was suffering which i dont think he is) Help!