Teeth, large, conical, and slightly recurred, 11 or 12 on each side of either jaw.

'Mammals'—Flower and Lydekker:

'Distinguished from all their allies by great strength and ferocity.'

'Combine in packs to hunt down and destroy . . . full sized whales.'

'Marine Mammalia'—Scammon:

Adult males average 20 feet; females 15 feet.

Strong sharp conical teeth which interlock. Combines great strength with agility.

Spout 'low and bushy.'

Habits exhibit a boldness and cunning peculiar to their carnivorous propensities.

Three or four do not hesitate to grapple the largest baleen whales, who become paralysed with terror—frequently evince no efforts to escape.