C ▁Gen us : ▁L ut ra ▁ ▁European ▁ot ter , ▁L . ▁lut ra ▁N T ▁ ▁Order : ▁Per iss od act y la ▁( odd - to ed ▁ung ul ates ) ▁ ▁The ▁odd - to ed ▁ung ul ates ▁are ▁brow sing ▁and ▁gra zing ▁m amm als . ▁They ▁are ▁usually ▁large ▁to ▁very ▁large , ▁and ▁have ▁relatively ▁simple ▁st om ach s ▁and ▁a ▁large ▁middle ▁toe . ▁ ▁Family : ▁Equ idae ▁( h ors es ▁etc .) ▁Gen us : ▁Equ us ▁ ▁Wild ▁horse , ▁Equ us ▁fer us ▁E W ▁ ▁Order : ▁Ar ti od act y la ▁( even - to ed ▁ung ul ates ) ▁ ▁The ▁even - to ed ▁ung ul ates ▁are ▁ung ul ates ▁whose ▁weight ▁is ▁bor ne ▁about ▁equally ▁by ▁the ▁third ▁and ▁fourth ▁to es , ▁rather ▁than ▁mostly ▁or ▁entirely ▁by ▁the ▁third ▁as ▁in ▁per iss od act yl s . ▁There ▁are ▁about ▁ 2 2 0 ▁art iod act yl ▁species , ▁including ▁many ▁that ▁are ▁of ▁great ▁economic ▁importance ▁to ▁humans . ▁ ▁Family : ▁Su idae ▁Sub family : ▁Su inae ▁Gen us : ▁Sus ▁ ▁Bo ar , ▁S . ▁sc ro fa ▁L C ▁Family : ▁C erv idae ▁Sub family : ▁C erv inae ▁Gen us : ▁C erv us ▁ ▁Red ▁de er , ▁C . ▁el aph us ▁L C ▁Sub family : ▁Cap re ol inae ▁Gen us