They do goats and sheep and some wierdos even horse but cows are just the best at it. It's also weird that they have 4 teats but typically only have one calf. That's not usually how it goes with mammals. Sheep, horses, and... goats? I can't remember if it's the same with goats... but they've all just got two. And goats and sheep are often bred for twinning. So wtf going on with cows and their super mammaries.