You think dating is hard? Try being one of these animals.

From spraying mates with urine to changing one's sex, these are the most intriguing courtships in the animal kingdom.

Inside the 'World’s largest snake den': 100,000 red-sided garter snakes huddle beneath Manitoba

Every spring in Manitoba, up to 100000 red sided garter snakes emerge from underground limestone dens, forming swirling mating balls. Why do they gather here in such astonishing numbers?
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It's the biggest snake den on the planet – 100,000 crammed into a small cavern

The Narcisse Snake Dens, in the Rural Municipality of Armstrong, are a mixture of grassland and forest, covering a limestone bedrock. Over millions of years, water has seeped into the porous limestone ...