My hamster has grown two large lumps near his bottom. Is it cancer?

Male hamsters have two very prominent testicles, one on each side of the tail and back passage, so these may be the lumps you have found. If in doubt,  get your hamster checked over by your vet.

My daughter has a hamster. It sleeps all the time. It’s 2 years old. Is this normal?

Hamsters are crepuscular which means they come alive at dawn and dusk, so don’t be surprised if he sleeps during the day when your daughter wants him  to play. However, if he is sleeping more than normal, then get him examined. 2 years is a typical life span of many hamsters and it may just be a symptom  of old age, but some are lively until they are 2 1/2 to 3 years old.