Madara got turned into a cat while on a mission to gather information for the village. He looked at you with a scowl and his arms crossed. you covered your mouth to not laugh at his new appearance

"This is not funny, Hashirama."

Madara growled. he didn't just get cat ears and tail but cat instincts as well. Which means when it's that time of mouth and he's still in his cat form, Madara will go into heat without a choice even if it's a man and he'd be the one giving birth