Since they were introduced for recreational hunting in the 1800s, foxes have spread across most of Australia. They have played a major role in the decline of a number of species of native animals and they also prey on newborn lambs. Control of foxes relies heavily oob conventional techniques like shooting, poisoning, and fencing (1). In the future, a combination of biological and conventional control methods may be able to reduce the damage foxes cause (1). 

Habitat & Range: 
The red fox makes its home in wooden areas, and farmland. It can be found in most of the United States, and Canada but not Alaska, Hawaii, far north in Canada, and the western U.S.  It can also be found in Europe, and was introduced to Australia. 

Sadly, there are only about 200 white tigers left in the world today. This makes them the candidate for the most endangered species. There are 5 living subspecies of the white tiger, and three are already extinct (2). The world populations of wild tigers are at about 5,000-7,000, the most numerous race being the Bengal race. The white tiger is a lone wolf in this large pack (1 white tiger for every 10,000 normal pigmented tigers) (2). During the last 100 years, only 12 white tigers have been spotted in India, this beauty is slowly fading away due to poaching. 

Habitat & Range: Adult male tigers like to live alone, unlike other big cats or female tigers and their cubs. The size of the tigers territory depends on the availability of food. Its range is about 10 to 30 square miles (3). 

In the absence if Wolves in Rocky Mountain and Yellowstone National Park, elk browsed willows in creek bottoms excessively. Now that wolves are back in Yellowstone, riparian areas have come alive as long-suppressed cottonwoods and willows are growing, providing vital habitats for songbirds (4). Beaver have also returned, influencing water quality. Wolves also play a big role in regulating other predators. With fewer coyotes, antelope fawn survival has increased dramatically (4). All a large part of the circle of life, which is why the Wolf is the ultimate keystone species.

Habitat & Range: 
Today, the range of the wolf has been reduced to Canada and minimal portions of the United States. 

This squid from hell has the coolest predator adaptation because sensory filaments and light producing organs at the arm tips are used to attract/find food and escape predators in the deep sea. The squid uses one filament at a time to find its prey, then swims around in a circle to catch its prey (5). Simply epic.

Habitat & Range:
They occupy meso- to bathypelagic depths where little light penetrates between 300-3,000m and are typically found between 600-1,200m. Their north-south distribution is localized between the 40 degrees N-S latitudes where the water is 2-6 degrees Celsius (5). 

The swordfish undertake vertical migrations in the ocean, following the movement of many small shrimp, fish and squid in attempt to avoid predators (6). The only major predators of the swordfish are humans, which earns them the title of the ultimate prey adaptation. 


Range & Habitat:
The swordfish is found worldwide in the Atlantic and Pacific Oceans in tropical, temperate and sometimes cold waters at depths between 200-600meters between 5-27 degrees Celsius. They have the widest temperature range of any billfish, and migrate seasonally to warmer waters in winter, and cooler waters in summer (6).