Nowadays the octopus is considered to be far more ____ than some mammals. Everybody knows that these ____ have eight legs and ____ ink when they are in danger but there is much more than that. They also are experts in camouflage being able to change their appearance in less than a second. It’s been recorded that once an ____ changed its pattern 1,000 times in seven hours of feeding. Like dolphins, chimpanzees and crows, octopuses are able to use simple tools. Scientists ____ they’ve seen them carrying coconut shells and using them as mobile homes. It is also a fact that they manage to open childproof pill bottles and get out of or into small ____ through holes not much bigger than their eyes. What is interesting, their ____ system is very complex. Actually, they have some kind of intelligence in each arm. It means that each arm can ‘think’ for itself. What’s more, if an octopus loses its leg, it can grow a new one. Some species of octopuses may have legs ____ longer than 8 meters. Unfortunately, for all of their amazing abilities, their lives are very short, just a few years or even a few months. Dolphins are also believed to be intelligent animals who ____ culture. If to compare the ratio size of brain to body, dolphins take the second place, right after humans. Like octopuses, they are ____ creatures. They play-fight with each other and even with other animals. Being ____ kinds, they live in groups and cooperate with each other to get food. Dolphins are known for their kindness. They always help sick or ____ members, even taking them to the surface to breathe. Dolphins are ____ not just with other dolphins but also with humans. There are many accounts of dolphins ____ humans. There is one more fact that makes them ____. Each dolphin has its special whistle, which is used as its name. With the help of their whistles, dolphins are able to recognize each other. These wonderful creatures sleep with only half of their brain. Another part is ____ to remain alert, which protects them from predators and helps to breathe when a dolphin is asleep. Ostriches are just as amazing as octopuses and dolphins. They have by far the strongest legs ever, which are able to kill a ____ or a human with a forward kick. Besides, they are ____ fast, reaching speeds of 70 kilometers per hour. These fancy birds have the largest ____ of any land animal allowing them to see predators at long distances. There is a myth that ostriches ____ their heads in the sand when they are in danger. Actually, it is not true. The ____ must have originated from the fact that ostriches press their necks to the ground to be less visible. From a distance it gives the appearance that they bury their ____, since the colour of their skin is similar to the colour of the ____ soil. Male and female ostriches take turns in sitting on eggs, male birds are darker, so their turn is at night, female ones are ____, so their turn is during the day. An ostrich egg can be as big as 24 chicken eggs.

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