Dolphins are marine mammals closely related to whales that vary in size but generally weigh around 40 kg. They have streamlined bodies and are carnivorous, mostly eating fish and squid. Dolphins have acute eyesight, can hear much higher frequencies than humans, use their teeth like antennae, and have a well-developed sense of touch. They communicate through whistle-like sounds, occasionally leap out of the water, and can sleep with half of their brain at a time.

1. Animal Intelligence
Dolphins
María José Quirós
English III
2012

2. General Information
 They are marine mammals closely related to
whales.
 There are almost forty species of dolphin.
 They vary in size from 1.2 m and 40 kg.
 They are carnivores, eating mostly fish and
squid.
 Dolphins are among the most intelligent
animals

3.  Dolphins have a streamlined fusiform body.
Senses
 Have acute eyesight.
 They can hear frequencies ten times or more
above the upper limit of adult human hearing
 Dolphin teeth are believed to function as
antennae.
 Dolphin's sense of touch is also well-developed.

4. Interesting
Information
 Dolphins communicate with
whistle-like sounds.
 Dolphins occasionally leap above
the water surface, and
sometimes perform acrobatic
figures .
 Dolphins sleep with only one
brain hemisphere in slow-wave
sleep.

5. Personal Opinion

6. Thank You