HP RULES
Juvenile: 60+(STR*5)

Adult: 100+(STR*5)

COMBAT RULES FOR PREDATORS

DAMAGE

ADULT (taking bonus additions into account):
1 - 5  ---> no dmg taken
6-10  ---> -20 HP
10-15 ---> -35 HP
15-20+ ---> -45 HP
NAT 20 (meaning you rolled exactly 20) ---> -70 HP

JUVENILE (taking bonus additions into account):
0 - 5  ---> no dmg taken
6-10  ---> -10 HP
10-15 ---> -20 HP
15-20+ ---> -30 HP
NAT 20 (meaning you rolled exactly 20) ---> -50 HP

REDUCED DEFENSE DAMAGE
First, the roll  number must exceed the roll of the attack made against you
Then,
0-8    ---> 0.85x dmg
8-15   ---> 0.70x dmg
15-20 ---> 0.65x dmg

COMBAT RULES FOR HERBIVORES.

DAMAGE

ADULT (taking bonus additions into account):
0 - 5  ---> no dmg taken
6-10  ---> -15 HP
10-15 ---> -25 HP
15-20+ ---> -35 HP
NAT 20 (meaning you rolled exactly 20) ---> -60 HP

JUVENILE (taking bonus additions into account):
0 - 5  ---> no dmg taken
6-10  ---> -10 HP
10-15 ---> -20 HP
15-20+ ---> -30 HP
NAT 20 (meaning you rolled exactly 20) ---> -45 HP

REDUCED DEFENSE DAMAGE
First, the roll  number must exceed the roll of the attack made against you
Then,
0-8    ---> 0.8x dmg
8-15   ---> 0.6x dmg
15-20 ---> 0.5x dmg