Sheep has a lot of friends, and an Industrial Sized Potion Making Cauldron that makes for a great Hot Tub(though he can write it off as a business expense =D), and his friends do enjoy his hospitality of using it.

Now, who is at the party? Well starting from the left:

AZ the Dragon, who belongs to   mitsozuka
Xue the Red Panda who belongs to   belker
Yoko the Polar Bear who belongs to my Friend Dew
Sheepcel the sheep belongs to   arcelsorm
Spriter-Mouse belogns to   spriter-mouse
and
Shunka the Hyena who belongs to   squikinky