By Inc. Encyclopaedia Britannica
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Additional resources for Britannica Illustrated Science Library Mammals
On the one hand, they have the ability to dive to a maximum depth of 9,800 feet (3,000 m) and remain underwater without oxygen for up to two hours. They are able to do this by means of a complex physiological mechanism that, for example, can decrease their heart rate, store and use air in the muscles, and prioritize the delivery of oxygen to certain vital organs such as the heart and lungs. They are the largest whales with teeth, which are found only on the lower mandible. Up to 120 minutes IS THE LENGTH OF TIME THEY CAN SPEND UNDERWATER WITHOUT BREATHING.
It rotates 180°. 3 The “Brake” It extends its hind legs perpendicular to the axis and reduces the speed of rotation of this part. Back Half WITH INDEPENDENCE Like a skater who extends or folds the arms to control the speed of rotation, the cat moves its hind legs—but independently of each other. LIKE A SKATER Name Domestic cat Family Felidae Species Felis catus Adult Weight 4 to 15 pounds (2-7 kg) Longevity 15 years Radius It draws its hind legs in to the axis of the body. Dimensions 10 inches (25 cm) 4 inches (10 cm) Axis It extends its front legs at right angles to the axis.
Behavior in a pack is highly regulated and hierarchical. Hierarchy There are two hierarchies in the pack: one of males and another of females. At the top of each are the alpha (or dominant) male and female. Underneath this pair is a group of subdominant wolves among whom there may be little or no difference in rank. Among females, a strong dominantsubmissive relationship is observed between beta and gamma wolves, as well as of the alpha female over those two. 6 to 20 individuals DOMINANT TERRITORY SUBDOMINANT OFFSPRING The highest-ranking adults live in the central area or home.