I saw a nature show about starving lions that were salivating over a herd of Cape buffaloes. When the poor hungry lions finally impounded the buffalo-to-become-dinner, one lion grabbed the buffalo by the nose till the beast succumbed.

This made me think of how the occasionally recalcitrant horse at the barn would be quieted by grabbing hold of its nostrils with a tool that I cannot remember the name of for the life of me.

Can anyone supply here the name of the tool?

Beast regards,
WildWind