Three rabbits, an ox, and a rooster

the Chinese animals associated with birthdays...

Two friends are Gold Rabbits           Kind-hearted, conservative, lively and enthusiastic

One friend is a Water Rabbit          Gentle, amicable, able to adjust readily to different conditions
Another one - Wood Ox                Restless, decisive, straightforward, and always ready to defend the weak and helpless

and one - Wood Rooster Energetic, over-confident