Musnad Ahmad 1153:1740

Waki’ narrated to us, from Yunus—meaning Ibn Abi Ishaq—from Mujahid, from Aisha, who said: The family of the Messenger of Allah (may Allah bless him and grant him peace) had a tame animal. When the Messenger of Allah (may Allah bless him and grant him peace) would go out, it would become active and play in the house. But when the Messenger of Allah (may Allah bless him and grant him peace) would enter, it would become still and would not move, out of dislike for disturbing him.