It's hard to see, but what's happening is the pony's got a fir branch in her mouth that she's having fun with, and she's trying to get the other horses to chase her, or try to take it away :~D
She's still got the branch in these two, and she's managed to get Bay to chase her.
But inevitably, he loses interest...
LOL!!
Pony: "I've got a braaaaanch, and yoooou caaaan't catch me!"
Bay: "Get AWAY from me with that damn branch or I'm gonna bite your ass!"
Pony: "You gotta catch it first! Here, I'll even hold it up there for ya. Nyaaaa!"
LOL, those are great. That reminds me of the way Rusty use to pester Harley till he got him to play. Rusty would rather play then eat:)
Becky