Agouti - This is your classic wild looking rat with a blend of brown, rust, and black hairs.
BEW - Black-Eyed White.
Berkshire - A solid color rat with white legs and belly.
Capped - White with an overlay of a different color.
Dalmatian - Like the dog! White with different size spots.
Dumbo - Named after the elephant. This rat has ears low on its head and looks like a clown.
Hairless - Nude, no hair. Often they are born with fur, but later lose it or have peach fuzz patches. They are particularly sensitive to cold.
Himalayan - Like the cat! Creamy white or ivory with darker brown on nose, rump and legs. Usually has pink or ruby eyes.
Hooded - A common lab rat color pattern. White with a different-colored hood and back stripe.
Husky - The hair is like the Husky dog.
Irish - Similar to Berkshire, but with just a triangle of white on the chest.
Odd-Eye - A rat with one pink or ruby eye and one black one.
PEW - Pink-Eyed White. An albino-type rat.
The Norway rat or brown rat. The majority of pet rats are of this species.
The roof rat or black rat. Rattus norvegicus' smaller, more agile cousin.
Rex - A rat with curly fur and whiskers!
Satin - Having softer fur than most rats. Unstandardized.
Self - Any solid color with no other markings.
Siamese - Also like the cat! Blue-Point Siamese is a light blue with darker slate blue patches on nose, rump and legs. Seal-Point is cream or beige with darker brown nose, rump and legs. Both can have either pink or ruby eyes.
Silvered - Any solid color with an even mixture of silver or white hairs throughout the fur.
Tailless - Again, obvious. Difficult to breed for. Serious birth defects can result from the tailless gene. Also, since the tail helps with temperature regulation, they are much more susceptible to heatstroke.
Variegated - Usually means a hooded rat with splotces of color on its sides. Can mean any spotted pattern, including Dalmatian.