As far as I can tell you can, but I'm curious if the following examples hold true (or if I'm completely wrong in the first place).
(a). You're riding a horse out of combat and decide to "shove" it into the ground. Since the horse probably wasn't expecting you to be a source of danger, I'm thinking it's safe to assume that it's surprised, thus can't act on the first round of combat that you just initiated. You attempt the shove and succeed, forcing the horse prone (and you're probably thrown to the ground as well), effectively stopping it's movement until it can act next.
(b). What if you did it while riding on the back of a Wyvern? Would it immediately fall to the ground prone? Are there rules I've missed somewhere stating how far you can fall in a round, or is it just assumed that the Wyvern has no chance to recover before hitting the ground?
(c). What if you grappled instead of shoved? Are you literally pinning a horse to the ground after putting it into an Equine Full Nelson? Is the Wyvern totally screwed as you both plummet to your deaths?
Anyway, am I missing something or would that stuff really play out the way it seems?
(a). You're riding a horse out of combat and decide to "shove" it into the ground. Since the horse probably wasn't expecting you to be a source of danger, I'm thinking it's safe to assume that it's surprised, thus can't act on the first round of combat that you just initiated. You attempt the shove and succeed, forcing the horse prone (and you're probably thrown to the ground as well), effectively stopping it's movement until it can act next.
(b). What if you did it while riding on the back of a Wyvern? Would it immediately fall to the ground prone? Are there rules I've missed somewhere stating how far you can fall in a round, or is it just assumed that the Wyvern has no chance to recover before hitting the ground?
(c). What if you grappled instead of shoved? Are you literally pinning a horse to the ground after putting it into an Equine Full Nelson? Is the Wyvern totally screwed as you both plummet to your deaths?
Anyway, am I missing something or would that stuff really play out the way it seems?