Intersex Bulldog Makes Dog-Testicle History

The first-ever intersex French bulldog was discovered in Spain this week, when researchers found that lady-bulldog Tana had internal testicles. Eighteen other dog breed have been found to exhibit intersex characteristics — as have goats, horses, pigs, and people. Tana’s testicles were surgically removed, though one vet says she might have been fine without surgery.