cows

[rainbow]

Who was the first person to look at a cow and say, 'I think I'll
squeeze these dangly things here and drink whatever comes out'? :D

[lynn]

Things that make you go hummmmmmm....... :D

[tomcat49]

A man...LOL

[Yogo]

yeah it's weird
but it's not just cows
human mammals lactate too :p