It It survives in a bamboo forests and eats bamboo. It can live long in forests. Eating bamboo is a SPECIAL adaptation for a panda to survive.

Behavioral adaptation:

Like many northern mammals, reindeer have a compact, stocky body with a short tail and ears to avoid losing body heat. Their skinny legs have veins and arteries that run side by side, so that the heat of the arterial blood coming from the body warms the cooler venous blood returning from the lower legs. Their noses have a special chamber for holding heat and moisture from their exhaled breath to warn the incoming icy Arctic air before it can chill their lungs.
The Coat

Reindeer have a double coat, like the Arctic fox. The fuzzy layer next to the skin holds air and keeps the caribou dry when they have to cross a river. Each hair of the outercoat is hollow and filled with air. This trapped air acts as insulation against loss of body heat, as well as making the animals more buoyant when swimming.
The Feet

Reindeer have split-hooves, like a cow. They walk on the middle two toes of each foot, which are covered with hooves. Because there are two hooves instead of one as in the horse, they can spread apart to bear more weight without sinking into snow or wet ground, and also act as paddles when swimming. The hooves also change shape with the seasons. In the summer, the fleshy pad in the center grows thicker, but in the winter it retreats and is overgrown by hair, so the caribou walk on the hard horn of the hoof for cold protection and better traction on snow and ice.
The Food

Even the reindeers digestion has adapted to their environment. During the summer they browse and graze like other plant-eaters, but come winter, they've cornered the market on a food source utilized by no other animal -- lichen.  Some form of it grows on rocks and trees and sand in almost every ecosystem, and in the tundra it can cover the ground like wall-to-wall carpeting. Reindeer can smell lichen under deep snow and use their scoop-shaped hooves to dig down to it. They also have developed special bacteria in their gut that help them digest lichen, and their ability to use this abundant but low-nutrition food helps them survive when there's nothing else to eat.

One predator-prey example is between the arctic fox and the vole. Arctic foxes normally eat small mammals, such as the vole. They also eat lemmings, birds, and birds' eggs.

Another predator-prey connection would be the snowy owl and several different small animals. Some small mammals like mice, voles, lemmings, and even rabbits are prey for the snowy owl. The snowy owl also eats birds and water foul, such as grouse and ducks. They eat almost any small animal, even fish.

  Seahorse :their bodies  to survive  thanks to the fact  that they  are  highly predated and must be camuflaged .