Lumbar Herniated Disc Video. 1  Learn how a lumbar disc herniates and can cause lower back pain. 2  Sciatica is leg pain caused by a problem in the low back. 3  See how a disc degenerates and how it can cause pain and other symptoms.
Salamanders are nocturnal and come out from their hiding places during moist nights to hunt for prey. Most species eat large amounts of invertebrates such as worms, insects and snails. A few species, like spring and red salamanders, will even eat other salamanders. Salamanders are equally important as food for many other animals, such as raccoons, opossums, bears, mink, river otter, frogs and snakes. In some places they are the most abundant vertebrate animals in the forest.
The nocturnal mammalâs eye has adapted to the dark. What diurnal mammals see as pitch-black darkness, nocturnal mammals see as dim light or shades of gray. Nocturnal mammals have proportionally larger eyes than mammals who are awake during the day; a tarsierâs eye is so large it canât even move in its socket. Their pupils are also able to open more widely in low light than the diurnal mammalâs pupils.