"Dismiss Pet now has a 3 sec cast time (up from 2 sec). This is to discourage swapping pets in the middle of PvP to get a different form of CC."
I think this one was a bad call by Blizz. Cant they atleast make it instant and a 3 sec wait time before you can summon new pet or something its soooo.. annoyning when u gotta dismiss your pet before jumping down places.