All of the animals, excepting man, know the principle object of life, is to enjoy it. ( I think Mark Twain said that originally. )
Nothing that God does is by happenstance, most certainly not the birth of His only Son.
Instead of being born in a palace, surrounded by royalty and servants, He chose to be born in a manger, with His human parents Mary and Joseph, angels on high, and adored by humble farm animals, whom St. Bonaventure called “creatures without sin”.
Below is photographic evidence of the holiness of God’s creatures.
H/t SureAwesomeness and FOTM‘s CSM