Musannaf Ibn Abi Shayba 3:540

Ghundar narrated to us, from Shu'bah, from 'Amr ibn Murrah, from Yahya ibn al-Jazzar, from Ibn 'Abbas, that the Prophet (peace and blessings of Allah be upon him) was praying, and a kid (young goat) began wanting to pass in front of the Prophet (peace and blessings of Allah be upon him). So it kept moving forward and backward until the kid jumped [across].