It always seemed odd to me that classic D&D had sabre tooth tigers and cave bears, but not cave lions. So I added this one yonks ago.
Cave Lion
by Cab Davidson
Stat Cave Lion AC: 6 HD: 9 Move: 150’(50’) Attack: 2 claws+ 1 bite Damage: 1d10/1d10/2d10 No. Appearing: 1d4 (1d4) Save As: F5 Morale: 9 Treasure Type: Vx2 Intelligence: 2 Alignment: Neutral XP Value: 900 An enormous cat, up to 9’ long and over 4’ tall the shoulder, the cave lion is typically only found in ‘lost world’ areas. They are larger even than sabre tooth tigers, and they extremely dangerous if angered. If both paws strike a target, that target must make a saving throw vs. paralysis or be knocked to the ground prone, giving the cave lion +4 to hit with their bite attack. A cave lion successfully biting a prone target automatically inflicts maximum damage.
Cave lions are inquisitive and well delve into caves and tunnels seeking prey. While most never see a human or demi human, it is rare that encounters with cave lions do not result in combat. A cave lion will hunt a new kind of prey just out of curiosity.