There were 15 Colombia Basin pygmy rabbits when Northwest Trek started a program to preserve the species in 2000.
13 years later, there are more than 1,600.
The wildlife park and Oregon Zoo together won the North American Conservation Award for that effort, the park said Friday.
Northwest Trek finished the program in 2012.
The Washington Department of Fish and Wildlife and Washington State University both helped with the program.
Now, the rabbits breed in the wild in the Sagebrush Flat Wildlife Area in eastern Washington.
Northwest Trek also won the award last year, for its work to save the Oregon spotted tree frog.