Definition that contains horses
- asian horseshoe crab horseshoe crab of the coast of eastern Asia
- xiphosura horseshoe crabs and extinct forms
- family equidae horses; asses; zebras; extinct animals
- family limulidae horseshoe crabs
- genus hipposideros horseshoe bats
- limulidae horseshoe crabs
- hipposideros horseshoe bats
- order xiphosura horseshoe crabs and extinct forms
- equidae horses; asses; zebras; extinct animals