A gray wolf can have up to 14 pup's at a time, though they usually have 4-6.
A red wolf will only have 2-3 pups in a litter typically.
An Arctic Wolf will normally give birth to 4-5 pups each litter.
The prairie wolf, also known as Coyote, generally have larger litters. These can be from one pup to 19 pups per litter. The average litter size is nearer 6 pups