These are some pics a few years ago of an Anglo-Arab mare named Belle. We had taken her to the vet to get some proud flesh removed from the back of one of her front hooves & the vet just knocked her out right there behind the building!
It was actually really funny to see how quickly the drug took effect. She was normally pretty "energetic" and as soon as he gave her the needle, her eyes went all sleepy & she sort of toppled over within 2 minutes
. She looks dead in the pics, I know.
The last 1 is when she had started to wake up.