Rage (Ex): A badger that takes damage in combat flies into a berserk rage the following round, clawing and biting madly until either it or its opponent is dead. It gains +4 Strength, +4 Constitution, and -2 AC. The creature cannot end its rage voluntarily.

Blindsight (Ex): Bats can "see" by emitting high-frequency sounds, inaudible to most other creatures, that allow them to locate objects and creatures within 120 feet. A silence spell negates this and forces the bat to rely on its weak vision, which has a maximum range of 10 feet.

Stampede (Ex): A frightened herd of bison flees as a group in a random direction (but always away from the perceived source of danger). They literally run over anything of size Large or smaller that gets in their way, dealing 1d12 points of damage for each five bison in the herd. A successful Reflex save (DC 16) halves the damage.

Ferocity (Ex): A boar is such a tenacious combatant that it continues to fight without penalty even while disabled or dying.

Trip (Ex): A cheetah that hits with a claw or bite attack can attempt to trip the opponent as a free action without making a touch attack or provoking an attack of opportunity. If the attempt fails, the opponent cannot react to trip the cheetah.

Sprint (Ex): Once an hour, a cheetah can take a charge action to move ten times its normal speed (500 feet).

Improved Grab (Ex): To use this ability, the crocodile must hit a Medium-size or smaller opponent with its bite attack. If it gets a hold, the crocodile grabs the opponent with its mouth and drags it into deep water, attempting to pin it to the bottom. The crocodile automatically deals bite damage each round it maintains the pin.

Trample (Ex): An elephant can trample Medium-size or smaller creatures for automatic gore damage. Opponents who do not make attacks of opportunity against the elephant can attempt a Reflex save (DC 20) to halve the damage.

Pounce (Ex): If a leopard leaps upon a foe during the first round of combat, it can make a full attack even if it has already taken a move action.

Improved Grab (Ex): To use this ability, the leopard must hit with its bite attack. If it gets a hold, it can rake.

Rake (Ex): A leopard that gets a hold can make two rake attacks (+6 melee) with its hind legs for 1d3+1 damage each. If the leopard pounces on an opponent, it can also rake.

Pounce (Ex): If a lion leaps upon a foe during the first round of combat, it can make a full attack even if it has already taken a move action.

Improved Grab (Ex): To use this ability, the lion must hit with its bite attack. If it gets a hold, it can rake.

Rake (Ex): A lion that gets a hold can make two rake attacks (+7 melee) with its hind legs for 1d4+2 damage each. If the lion pounces on an opponent, it can also rake.

Improved Grab (Ex): To use this ability, the octopus must hit with its arms attack. If it gets a hold, it automatically deals bite damage each round the hold is maintained.

Ink Cloud (Ex): An octopus can emit a cloud of jet-black ink 10 feet high by 10 feet wide by 10 feet long once a minute as a free action. The cloud provides total concealment, which the octopus normally uses to escape a losing fight. Creatures within the cloud suffer the effects of total darkness.

Jet (Ex): An octopus can jet backward once a round as a double move action, at a speed of 200 feet.

Improved Grab (Ex): To use this ability, the giant octopus must hit a Medium-size or smaller opponent with a tentacle rake attack. If it gets a hold, it can constrict.

Constrict (Ex): A giant octopus deals 2d8+6 points of damage with a successful grapple check against Medium-size or smaller creatures.

Ink Cloud (Ex): A giant octopus can emit a cloud of jet-black ink 20 feet high by 20 feet wide by 20 feet long once a minute as a free action. The cloud provides total concealment, which the octopus normally uses to escape a losing fight. Creatures within the cloud suffer the effects of total darkness.

Jet (Ex): A giant octopus can jet backward once a round as a double move action, at a speed of 200 feet.

Blindsight (Ex): Porpoises can "see" by emitting high-frequency sounds, inaudible to most other creatures, that allow them to locate objects and creatures within 120 feet. A silence spell negates this and forces the porpoise to rely on its vision, which is approximately as good as a human's.

Keen Scent (Ex): A shark can notice creatures by scent in a 180-foot radius and detect blood in the water at ranges of up to a mile.

Keen Scent (Ex): A shark can notice creatures by scent in a 180-foot radius and detect blood in the water at ranges of up to a mile.

Keen Scent (Ex): A shark can notice creatures by scent in a 180-foot radius and detect blood in the water at ranges of up to a mile.

Improved Grab (Ex): To use this ability, the constrictor snake must hit with its bite attack. If it gets a hold, it can constrict.

Constrict (Ex): A constrictor snake deals 1d3+4 points of damage with a successful grapple check against Medium-size or smaller creatures.

Improved Grab (Ex): To use this ability, the constrictor snake must hit with its bite attack. If it gets a hold, it can constrict.

Constrict (Ex): A giant constrictor snake deals 1d8+10 points of damage with a successful grapple check against Large size or smaller creatures.

Poison (Ex): Bite, Fortitude save (DC 11 for all sizes Large and smaller, DC 13 for a Huge viper); initial and secondary damage 1d6 temporary Constitution.

Poison (Ex): Bite, Fortitude save (DC 11 for all sizes Large and smaller, DC 13 for a Huge viper); initial and secondary damage 1d6 temporary Constitution.

Poison (Ex): Bite, Fortitude save (DC 11 for all sizes Large and smaller, DC 13 for a Huge viper); initial and secondary damage 1d6 temporary Constitution.

Poison (Ex): Bite, Fortitude save (DC 11 for all sizes Large and smaller, DC 13 for a Huge viper); initial and secondary damage 1d6 temporary Constitution.

Poison (Ex): Bite, Fortitude save (DC 11 for all sizes Large and smaller, DC 13 for a Huge viper); initial and secondary damage 1d6 temporary Constitution.

Improved Grab (Ex): To use this ability, the squid must hit with its arms attack. If it gets a hold, it automatically deals bite damage each round the hold is maintained.

Ink Cloud (Ex): A squid can emit a cloud of jet-black ink 10 feet high by 10 feet wide by 10 feet long once a minute as a free action. The cloud provides total concealment, which the squid normally uses to escape a losing fight. Creatures within the cloud suffer the effects of total darkness.

Jet (Ex): A squid can jet backward once a round as a double move action, at a speed of 240 feet.

Improved Grab (Ex): To use this ability, the giant squid must hit a Medium-size or smaller opponent with a tentacle rake attack. If it gets a hold, it can constrict.

Constrict (Ex): A giant squid deals automatic tentacle rake damage with a successful grapple check against Medium-size or smaller creatures.

Ink Cloud (Ex): A giant squid can emit a cloud of jet-black ink 20 feet high by 20 feet wide by 40 feet long once a minute as a free action. The cloud provides total concealment, which the squid normally uses to escape a losing fight. Creatures within the cloud suffer the effects of total darkness.

Jet (Ex): A giant squid can jet backward once a round as a double move action, at a speed of 320 feet.

Pounce (Ex): If a tiger leaps upon a foe during the first round of combat, it can make a full attack even if it has already taken a move action.

Improved Grab (Ex): To use this ability, the tiger must hit with a claw or bite attack. If it gets a hold, it can rake.

Rake (Ex): A tiger that gets a hold can make two rake attacks (+9 melee) with its hind legs for 1d8+3 damage each. If the tiger pounces on an opponent, it can also rake.

Attach (Ex): If a weasel hits with a bite attack, it uses its powerful jaws to latch onto the opponent's body and automatically deals bite damage each round it remains attached. An attached weasel has an AC of 12.

Blindsight (Ex): Whales can "see" by emitting high-frequency sounds, inaudible to most other creatures, that allow them to locate objects and creatures within 120 feet. A silence spell negates this and forces the whale to rely on its vision, which is approximately as good as a human's.

Blindsight (Ex): Whales can "see" by emitting high-frequency sounds, inaudible to most other creatures, that allow them to locate objects and creatures within 120 feet. A silence spell negates this and forces the whale to rely on its vision, which is approximately as good as a human's.

Blindsight (Ex): Whales can "see" by emitting high-frequency sounds, inaudible to most other creatures, that allow them to locate objects and creatures within 120 feet. A silence spell negates this and forces the whale to rely on its vision, which is approximately as good as a human's.

Trip (Ex): A wolf that hits with a bite attack can attempt to trip the opponent as a free action without making a touch attack or provoking an attack of opportunity. If the attempt fails, the opponent cannot react to trip the wolf.

Rage (Ex): A wolverine that takes damage in combat flies into a berserk rage the following round, clawing and biting madly until either it or its opponent is dead. An enraged wolverine gains +4 Strength, +4 Constitution, and -2 AC. The creature cannot end its rage voluntarily.