They were intially released on July 2, 2011 but disappeared from the den soon after. They were once again released into the den on September 8, 2011.
On February 11th, 2013, the Red and White Silvwolves were updated. They now have different eggs from one another, along with a new set of sprites.
Egg: "This egg has a checkered pattern on it."
Foxling: "Aww... it's a wolf pup! It's pelt is checkered in two tones of white and it has an impressive sprint."
Adult: "White Rook Silvwolves are a very territorial breed. They live in large packs and prefer the company of their own kind, though they tolerate other species well enough. The only exception to this are the Red Rook Silvwolves, which the White Rook Silvwolves cannot stand. Encountering their red pelted others usually results in violence. Domestication seems to calm this grudge.
All Rook Silvwolves are incredible runners and one of the fastest species in the forest. Their speed does have a crippling downside - at top speed they move so fast that they cannot turn. This means they can only reach their full speed potential if they are moving in a straight line. This is believed to be why Rook Silvwolves make their homes in large, open areas."
Entire set: birdzareboomin
Detail art: Hawaiianbabidoll