The ostrich (Struthio camelus) is a large flightless bird that lives in Africa.
It has a long neck and long legs and can run up to 65 km/h (40 mph). It is the fastest land bird alive.
The ostrich is also the largest bird and lays the largest eggs.
The Galapagos tortoise is the largest living tortoise. It can only be found on the Galapagos islands.
They can weigh over 300 kilograms (660lb) and measure 1.2 meters (4 ft) long.
It is believed that Galapagos tortoises can live to 200 years.
Arowanas are freshwater fish of the family Osteoglossidae. The are also known as aruanas or arawanas.
Their head is bony and their long body is covered by large scales. The dorsal and the anal fins have soft rays and are long based, while the pectoral and ventral fins are small.
Arowanas can breathe from air by sucking it into their swim bladder. The swim bladder is lined with capillaries like lung tissue.
Arowanas can grow up to 3-4 feet in length.
The emu is the second tallest living bird after the ostrich. It is the largest bird in Australia.
Emus are flightless and can grow up to 2m (6ft) in height. They are brown and have soft feathers. They each insects and plants.
Emus can run very fast, being able to sprint at 50 km/h (30mph).
The horseshoe crab also known as the horsefoot, king crab, or sauce-pan is a chelicerate arthropod. It is more closely related to spiders, ticks, and scorpions than to crabs. They are most commonly found in the Gulf of Mexico and along the northern Atlantic coast of North America.
Horseshoe crabs have five pairs of book gills located just behind their appendages that allow them to breathe underwater. They can also breathe on land for short periods of time as long as their gills remain wet.
They can grow up to 20 inches (51 cm). They eat molluscs, annelid worms, and other benthic invertebrates. Its mouth is located in the middle of its underside and they use pincers on the side of their mouth to grab food.
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