We wear socks to keep our feet warm. But there’s an Australian baby kangaroo (袋鼠) who does so for a different reason. Frankie has to wear socks because she sucks (吸吮) on her toes (脚趾头) too much. The socks protect her feet. Even with her socks on, she is still able to hop (跳行) and play around like any other kangaroo.