In my opinion, gerbils make good pets. Gerbils are very active and friendly. They can be very social towards you once they get used to you. These pets are playful but they are easily startled by noise.
hamsters are unpredictable they will bite for no reason 2 females in the cage will do nothing but fight. also a female hamster after giving birth sometimes turn cannibalistic and eat her young. chinchillas are more expensive but make great pets