Nurse Charlie the Rat, nurse and researcher at Hedgehog Hospital, dressed in a dark blue Foxerly-Clark surgical gown, white Foxerly-Clark surgical gloves and a light blue Foxerly-Clark surgical cap which covered his ears and his bangs, and is breathing in his white MoboTech MTN95CS-XL-W cup-style disposable particulate surgical respirator mask over his nose and mouth, to protect his lungs from any harmful airbourne particles and nasty germs. Charlie's mask also keeps his muzzle warm.