Ideally, wear a cycle helmet and adopt a brace position. Remember that water and electricity don't mix, so turn off the lights when you're in the bath and don't buy electricity from your water company. Wear a cycle helmet in the bath. The average garden shed is chock full of instruments of death. When mowing, wear a cycle helmet.
All domestic animals are stiff with rabies, tetanus and lasser fever.
Keep them under observation for six months before letting them into the house. Remember, too, that animals are essentially savage, and in the wild a hamster is an attack animal. One of the main risks to life these days is death.