These young are suckled on milk secreted by mammary glands of the mother. Toothed whales comprise a large group of the cetaceans, including dolphins, porpoises and the whales with teeth. They demonstrate an incredible range of forms, behavior and lifestyles that reflect their evolutionary history and the variety of environments in which the live. Echolocation clicks, similar to sonar, are intense, short pulses of amplitude-modulated sound. These sounds are probably function primarily in the exchange of information among individuals.
Communication is an important aspect of any society or collection of individuals.
Dolphins and whales communicate with the variety of sounds they produce as well as with body posture, movement, and physical contact behavior. Communication Dolphins are thought to be highly intelligent creatures due to their relatively large brain size and apparently complex communication systems. Such conclusions, however, remain the subject of debate. These animals must not be measured according to how close they come to equaling human intelligence and development, but rather accepted and appreciated for what they are. Body Contact Dolphins have a well-developed tactile sense.