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When threatened, an adult porcupine can bristle its quills, displaying a white stripe down its back, and use its teeth to make a warning, clacking sound. If the olfactory, visual, and auditory warnings fail, then it can rely on its quills. An adult porcupine when attacked turns its rear to the predator.
There are four main displays seen in a porcupine: (in order from least to most aggressive) quill erection, teeth clattering, odour emission, and attack. [12] A porcupine's colouring aids in part of its defence as most of the predators are nocturnal and colour-blind. A porcupine's markings are black and white.
Their teeth are similar to those of Old World porcupines, with the dental formula 1.0.1.3 1.0.1.3. Solitary offspring (or, rarely, twins) are born after a gestation period of up to 210 days, depending on the species.
It was approximately 20% larger than its closest relative, the living Indian porcupine (H. indica), reaching lengths of over 115 cm (45 in). It also differs from the Indian porcupine in having a high and narrow occipital region, in the anteriorly convergent arrangement of maxillary cheek-teeth series, and in its mandible and the cheek-teeth ...
Indian porcupines are almost the same size on average as well, being slightly heavier on average than crested porcupine but slightly lighter than Cape porcupines. [5] [6] Cape porcupines measure 63 to 81 centimetres (25 to 32 inches) long from the head to the base of the tail, with the tail adding a further 11–20 centimetres (4.3–7.9 inches ...
"It didn't break the skin, but it did leave teeth marks. And it was pretty tender," she said. In response to the reptile intruder, she enlisted her husband for help. He removed the snake from the ...
During active cancer treatment, patients face many smaller battles on the path to remission. One of those lesser-known struggles is a condition known as chemo mouth, a painful side effect of ...
A fossil reveals how a now-extinct species of dugong was swimming in the sea about 15 million years ago when it was preyed upon by a crocodile and a tiger shark.