Quote from Dr_Frederick >>

These guys are vicious for CR 0.

 if these were real life accurate they would at most cr 1/2

if these were fully actuate to real life this would be there real stats. ac:14, hp: 12 (3d8), str: 14, dex: 14, con:12, int:3, wis:12, cha:6, perception +5, Darkvision 60 ft, Passive Perception 13, Pack Tactics. The hyena has advantage on an attack roll against a creature if at least one of the hyena's allies is within 5 feet of the creature and the ally isn't incapacitated, Bite. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 10 (2d10) piercing damage and grapples, and Endless Endurance: the hyena can take the dash action as a bonus action.

let's make the players scream when they meet them

ima murder my players with these bois

These could be a familiar lol

you can have these as a familiar in the new rules, and you can ride them if you're small. guess what my halfling wizard is doing?

They really should have Rampage like their giant version and gnolls. Maybe up their strength too. IRL hyenas are crazy good at killing.