Foxes are good parents; Fox pups are born blind and don't open their eyes until nine days after birth. During that time, they stay with the vixen (female) in the den while the dog (male) brings them food. They live with their parents until they're 7 months old. Vixens sometimes go to great lengths to protect their pups—once, in England, a fox pup was caught in a wire trap for two weeks but survived because its mother brought it food every day.