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Like all other hedgehogs Erinaceus is nocturnal and seeks shelter in shrubs and burrows during the day. [6] The common defense mechanism is to roll into a ball with the spines facing outward. The action is done because of excess loose skin on the back of hedgehogs allows them to pull it around the rest of their body forming a ball.
A skin-skeletal preparation Close-up of the last 5 millimetres (0.20 in) of a hedgehog spine (SEM microscopy) A hedgehog that feels threatened can roll into a tight ball. Hedgehogs roll into a tight spiny ball when threatened, tucking in the furry face, feet, and belly. [6] The hedgehog's back contains two large muscles that direct the quills.
The Southern African hedgehog is said to be a slow mover; however, when threatened, it can move surprisingly fast at 6 to 7 km/h (3.7 to 4.3 mph). [3] During the day, they typically stay where they live, which is an area that is covered with vegetation or in a hole in the ground.
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Desert hedgehog from Eastern Saudi Arabia. The desert hedgehog is one of the smallest of hedgehogs. It is 5.5 to 11 inches (140 to 280 mm) long and weighs about 10 to 18 ounces (280 to 510 g). The quills (or spines to give their correct name) on its back can be banded with coloring similar to the four-toed hedgehog. It is usually identified by ...
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Pelvic fin of a Java barb, a ray-finned fish The short fin spines on a coelacanth, a lobe-finned fish A lionfish, with venomous spines The stinger on a stingray's tail. Spines are found in the fins of most bony fishes, particularly actinopterygians (ray-finned fishes), who have folding fan-like fin made of spreading bony spines called lepidotrichia or "rays" covered by thin stretches of skin.
Old habits are hard to break, including making the bed first thing in the morning. But when it comes to the health of your bedding, mattress, and overall sleep situation, putting off this early ...