Gray Fox (Urocyon cinereoargenteus) pups, 18 July 2015.
Note the grizzled upperparts; cinnamon neck, sides, and legs; and the black-tipped tail.
Litter size in Gray Foxes ranges from 1-7, with a mean of 3.8 When the pups are ~3 months old, they'll forage away from the den site with their parents. At ~4 months, they'll hunt independently.
For pictures of an adult, see the post from 10 September 2012.
Facts above from Fritzell, E.K. and K.J. Haroldson. 1982. Mammalian Species No. 189, Urocyon cinereoargenteus. The American Society of Mammalogists.