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The North American porcupine (Erethizon dorsatum), also known as the Canadian porcupine, is a large quill-covered rodent in the New World porcupine family. It is the second largest rodent in North America after the North American beaver ( Castor canadensis ).
Porcupines are large rodents with coats of sharp spines, or quills, that protect them against predation. The term covers two families of animals: ...
Sexual mimicry is also used as a mate-guarding strategy by some species. Mate-guarding is a process in which a member of a species prevents another member of the same species from mating with their partner. Mate-guarding is seen in Cotesia rubecula, a parasitic wasp from the family Braconidae whose mating system is polygynous. Males are ...
A mating system is a way in which a group is structured in relation to sexual behaviour. The precise meaning depends upon the context. With respect to animals, the term describes which males and females mate under which circumstances.
However, in vascular plants this is mostly achieved without physical contact between mating individuals (see pollination), and in some cases, e.g., in fungi no distinguishable male or female organs exist (see isogamy); however, mating types in some fungal species are somewhat analogous to sexual dimorphism in animals, and determine whether or ...
The largest herd in North America is known as the Porcupine Caribou herd, with a population of over 200,000 reindeer recorded since 2017. Although other herds have seen a decline in their numbers ...
"Unfortunately, the decline in porcupines is a bit of a mystery and we are hoping to start working on it soon within the FWP Nongame Program," explained Torrey Ritter, non-game Wildlife Biologist ...
This porcupine has a short tail which has rattle quills at the end. The rattle quills broaden at the terminal end and the broad portion is hollow with thin walls. When these quills are vibrated, they produce a hiss-like rattle. The front feet of the crested porcupine have four developed and clawed digits with a regressed thumb, the rear feet ...