Dogmole

Dogmoles cannot burrow into solid rock, but they can move through softer material like soil or loose rubble, leaving a usable tunnel 5 feet in diameter.

Wild dogmole packs are famed for their battles against monsters in the dark caverns of the world. If the dogmole draws blood against vermin, a purple worm, or other underground invertebrates, it gains a +4 boost to its Strength and Constitution, but suffers a -2 penalty to its AC. The wormkiller rage lasts for 3 rounds. It cannot end the rage voluntarily while the creatures that sent it into a rage still lives.

The dogmole makes one claw attack and one bite attack.

Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage.

Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 12 (3d6 +2) slashing damage.