Mating Preferences for Wild Wolves

Some Yellowstone research shows wolves prefer to mate with a different colored wolf. Since Yellowstone wolves are about 50/50 grey and black, that shows a decided preference for “opposites attract.” In one big study, 62% of all matings tracked were of a grey wolf to a black wolf. There’s speculation it’s part of the instinct to prevent in-breeding. (Source: Yellowstone Wolves book.)

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