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.
Nocturnal vs. Diurnal. Many reptiles are nocturnal, meaning they are active at night and sleep during the day. The bearded dragon is an exception to this rule. They are diurnal -- they feed and roam during the day, preferring to sleep at night, like you. When caring for bearded dragons, you need to ensure their nights are dark, so they can sleep. Avoid using the red incandescent light bulbs that manufacturers make for reptile enclosures at night; these can distract your reptile and prevent her from sleeping.