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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. [7] The hedgehog's back contains two large muscles that direct the quills.
Lower branches typically fall off, and the trunk darkens with age. The silvery-white spines, which are actually a form of leaf, almost completely obscure the stem with a fuzzy-looking but impenetrable defense. The spines are 1 in (2.5 cm) long and covered with a detachable, paper-like sheath. [2]
Erinaceus is a genus of hedgehog from the family of Erinaceidae. There are four main species of Erinaceus. The range is all across Europe, throughout the Middle East, parts of Russia, and extending to northern China and Korea. The European hedgehog (Erinaceus europaeus) has been introduced to New Zealand. [2] [3]
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.
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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.
The lesser hedgehog tenrec (Echinops telfairi) is one of 16 mammalian species that will have its genome sequenced as part of the Mammalian Genome Project. It is increasingly popular in the pet trade, and in the future may serve as an important model organism in biomedicine, as it is only distantly related to the mice, rats, guinea pigs, and ...
Join Jen from 8-Bit Cuisine as she recreates Chili Dogs from Sonic the Hedgehog! This easy and delicious recipe is one that our favorite blue hedgehog would surely approve of!