Ostrich is a pet in Battle Run that appears to have the same name of a land bird in real life. Characters ride on top of it while holding a leach, respectively.
It has a quite underwhelming speed buff during its attack phase. You have the speed buff throughout its entire duration.
After its activation, it immediately attacks by wrapping a vine made out of feathers that slows down the opponents and disables their usage of items for a while but, only they get too close (similar to Mummy's attack phase and yarn's affect). You have this attack phase throughout its entire duration.