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Pantropical Spotted Dolphin

The Pantropical Spotted dolphin, Stenella attenuata, is a small, toothed whale that has a long, beaklike snout, a sickle-shaped dorsal fin, and sharp teeth. It is also known as the Spotted Dolphin, the White-Spotted Dolphin, the Brindled Dolphin, the Spotter, the Spotted Porpoise, and the Slender-beaked Dolphin. This cetacean is found worldwide in tropical seas, especially around islands.
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Dolphins breathe air through a single blowhole. They grow to be at most 8 feet (2.4 m) long and weigh from 200 to 255 pounds (90-115 kg). Spotted Dolphins live in groups called pods.
Swimming: Like other whales, dolphins swim by moving their tail (the flukes) up and down. Fish swim by moving their tail left and right.
Diet: Spotted dolphins are hunters who find their prey at the surface of the water, eating mostly fish and squi . They sometimes eat crustaceans
Echolocation: Like other toothed whale , dolphins use echolocation, a way of sensing in which they emit high-pitched clicks and sense them as they bounce back off objects (like prey).
Predators of Dolphins: Some sharks (including tiger sharks  dusky sharks, and bull sharks  and orcas will prey upon dolphins. Dolphins are also often trapped in people's fishing nets. The Spotted Dolphin is an endangered species

Gray Wolf

The Gray Wolf (also known as the Timber Wolf) is a wild dog that lives in packs (groups). Gray wolves that live in the treeless plains of the far north are called Tundra Wolves or Arctic Wolves. The gray wolf is a fast-running carnivore (meat-eater). After almost going extinct, it is now only found in Alaska, Minnesota, Michigan, and Wisconsin.
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Howling: Wolves howl as a signal to other wolves, telling of the beginning and ending of a hunt, of a wolf separated from its pack, as a warning to other wolf packs, and simply for the fun of it.
Anatomy: Gray Wolves have strong jaws with sharp teeth, including long canine teeth which tear flesh. Adults are about 4 1/2 feet long and weigh about 80 pounds. They have very good eyesight, acute hearing, and a keen sense of smell.
Hunting and Diet: Wolves hunt in packs and often prey upon animals that are much larger that they are. They mostly eat hoofed mammals, like elk, deer, moose, sheep, and bison, but will eat almost anything, including birds, fish, snakes, lizards, and fruit. Wolves almost never attack people. They swallow food in large chunks, barely chewing it. Wolves can eat up to 20 pounds (9 kg) of meat at one meal. When they return from the hunt, wolves regurgitate some of the food for the hungry pups.

Wombat

The Wombat is a rare marsupial from dry and semi-dry areas on the islands of Australia and Tasmania It is the largest burrowing mammal. This solitary animal is nocturnal (most active at night).

Anatomy: This thick-set mammal has very short legs, large paws, sharp claws, and a shuffling walk. Wombats range from 2.5-3.8 ft (0.75-1.2 m) long. It has a backwards-facing pouch (to keep out dirt as it burrows) in which its newborn will stay until it is able to walk. Wombats have four incisor teeth that continue to grow throughout their lives. The wombat has unusual, cube-shaped dung.

Diet: These herbivores (plant-eaters) eat grass, leaves, bark, and roots.

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Yaks

Yaks are large, long-haired, horned mammals that live in mountainous Tibet. These sure-footed cattle were domesticated hundreds of years ago by people in Asia. Yaks can climb up to 20,000 feet (6,100 m) above sea level.

Behavior: Female yaks and their young calves travel in herds of hundreds of animals. The herd protects the young from predators, like wolves.

Anatomy: The yak measures from 3 to 6 feet (0.9 to1.8 m) tall at the shoulder and weighs from 400 to 1,800 pounds (180 to 820 kg). Males are larger than females. Both males and females have horns. Yaks have a massive, low-slung body, a huge hump on their shoulders, and hoofed feet. Yaks have very long fur, and during the winter, they also grow a short, thick fur undercoat which insulates them from the cold. They have a life span of about 20 years in captivity.

Diet: Yaks are herbivores (plant-eaters) that graze on grasses, but also browse on the leaves of low-lying shrubs and herbs. Like cows (which they are related to), they swallow their food without chewing it. Later, they regurgitate the food (called a cud) and chew it. Yaks, like other ruminants, have a four-part stomach.


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Yellow Jackets

Yellow Jackets are a genus of very aggressive social wasps. There are many different species of Yellow Jackets.
Anatomy: These flying insects have a hard exoskeleton, six jointed legs and four wings. Like all insects, they have three body parts; the head, the thorax, and the abdomen. They are from 5/8 to 1 inch (14-25 mm) long. Females have a stinger at the tip of the abdomen.
Diet: Wasps eats insects, arachnids (like spiders), and sweet nectar.
Nests: All wasps build complex nests with many six-sided cells. They make the nests with a type of paper that they make by chewing wood and plant fibers. The nests are used to lay eggs in and to protect the young.
Social Organization: Yellow Jackets live in groups (called colonies) and work together. The Yellow Jackets are divided into three classes: queens (large females who build the nest and lay eggs), workers (small females who build nests and feed the young), and drones (males). Every winter, all the wasps die except new, mated queens, who burrow into leaves or soil to survive.

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Zebra

Zebras are large, fast-running mammals that live on African grassy plains (savannas). They can run up to 40 mph (65 kph) in short bursts in order to escape from predators (like lions and hyenas). The zebra's life span is about 28 years. Zebras are closely related to horses and donkeys.
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Families and Herds: Zebras are very social animals and live in large, stable family groups which are led by females. Stallions (males) watch the rear of the group in order to help protect them from predators. Families will sometimes merge to form large herds.
Anatomy: Zebra fur has distinctive white stripes on a black background. No two zebras have the same pattern. These stripes may help to confuse predators chasing the zebra, making them misjudge distances. Zebras have hoofed feet. They are over 4 feet (1.2 m) tall at the shoulder and weigh over 600 pounds (270 kg). They have a long, upright, bristly, black and white mane. Large eyes and ears help the zebra detect predators early, allowing it to run away.
Diet: Zebras eat grasses; they are nomadic herbivores. They spend most of their time grazing. Zebras need to drink water often and usually stay close to a watering hole.

Downy Woodpecker

The Downy Woodpecker (Picoides pubescens) is a common, widespread woodpecker. It is found in woodlands, parks, and a variety of biomes throughout North America.
Anatomy: The Downy Woodpecker is a small, black and white bird with a short bill. The male has a red spot on the back of its head. It is about 6 to 6.5 inches (15-16.5 cm) long.
Diet: The Downy Woodpecker eats insects, seeds, grains, and suet.
Pecking: Woodpecker peck for many reasons including eating, establishing territory, attracting mates, and nesting. In order to find and eat insects that live in tree bark (including ants and beetles), woodpeckers peck into the bark with their beak, making small holes. Woodpeckers also make drumming sounds on wood, but this is to establish territories and attract mates in the Spring. A third use of pecking is to make a nest within a dead tree.
Eggs and Nests: The Downy Woodpecker's nest is a hole in a tree that has been lined with wood chips. Females lay 3-6 white eggs in each clutch (a set of eggs laid at one time). The eggs hatch in just under 2 weeks.
 
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