Boar

If the Boar moves at least 20 feet straight toward a target and then hits it with a tusk attack on the same turn, the target takes an extra damage. If the target is a creature, it must succeed on a saving throw or be knocked prone.

If the Boar takes 7 damage or less that would reduce it to 0 hit points, it is reduced to 1 hit point instead.

+3 to hit, range 5 ft. Hit: 4 (1d6 + 1) slashing damage.