On release, the patch notes stated that Poro-Snax cost 35 gold and could be purchased from the store. However, players now start with a Poro-Snax in their trinket slot. Additional snax cannot be purchased.
RiotRunaan has stated that Poros enjoy mocking and toying with the people that enter the bridge.
Riot's lore department had confirmed the collective noun for a group of Poros is a 'fluft of Poros'.
One Poro starts in each center bush and will normally run from champions. Because of this, they can give away your position by exiting the bush and being seen by the enemy. However, if the first champion to enter the bush has a Poro-Snax, the Poro will stay next to that champion.
If a Poro gets too close to one of the two Obelisks, it gets fired by a laser and starts to run away.
Riot has stated that Poro-Snax are a Poro's favorite food.
As Braum, if you feed a Poro with a Poro-snax, the Poro will grow a black mustache.