Reproduction: During parturition and pup rearing, gray foxes use earthen dens, either dug themselves or modified from burrows of other species. They will also den in wood and brush piles, rock crevices, hollow logs, hollows under shrubs, and under abandoned buildings. Gray foxes may even den in hollows of trees up to nine meters above the ground. Den use diminishes greatly during non- reproductive seasons when gray foxes typically use dense vegetation for diurnal resting locations. Gray foxes reach sexual maturity at 10 months of age, although not all females breed in their first year. Breeding typically occurs from January to April with gestation lasting about 60 days. Litter size ranges from 1-10 and averages around four pups. Eyes of pups open at about 10-12 days. Pups accompany adults on foraging expeditions at three months and forage independently at four months. Females appear to be responsible to provision pups, although there is some evidence that males may also contribute to care of ...

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Digital Morphology account of the gray fox, Urocyon cinereoargenteus, featuring CT-generated animations of the skull and commentary by Dr. Pamela Owen

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Previous research in the southeastern United States has reported that movements were similar between sexes, but different among seasons, with less movements during denning periods. Our data supports these earlier findings as movement rates did not differ between sexes. Given the lack of significant sexual dimorphism in gray foxes and the potential for biparental care of pups, it is not surprising that movement rates were similar between sexes. Gray fox on TWMA exhibited greatest movement rates during whelping-pup rearing and lowest rates during breeding-denning. Lower movement rates during breeding-denning are likely from denning behavior. Increasing movement rates during whelping-pup rearing were likely from pair members intensifying foraging efforts to fulfill increasing food requirements for parents and young. Additionally, throughout the species range, gray foxes display greatest activity during nocturnal and crepuscular periods. Similarly, gray foxes on TWMA and GP were most active during ...

This species is slightly smaller than the red fox with an average weight of 8 pounds and a total length of 34-40 inches. The fur is grizzled gray above, white to ashy below, and lighter gray to reddish on the neck and sides. It has a long bushy tail with a median black stripe, and a black tip. The breeding season is from January-April with peaks in February. A litter of 2-7 pups are born from March-May in a whelping den which may have grass, leaves or bark as a nesting material. They are primarily nocturnal animals and are most active at dawn and dusk. They are adept climbers, and use trees to escape enemies. Barks, yaps and yips are the frequent vocalizations. Life span in the wild is 1 1/2 to 3 years.. ...

Harris Township officials said Monday a gray fox that attacked a resident in the Willowbrook neighborhood last week has tested positive for rabies.

TY - JOUR. T1 - Infection with a Hepatozoon sp. closely related to Hepatozoon felis in a wild Pampas gray fox (Lycalopex - Pseudalopex - gymnocercus) co-infected with canine distemper virus. AU - Giannitti, Federico. AU - Diab, Santiago S. AU - Uzal, Francisco A. AU - Fresneda, Karina. AU - Rossi, Daniel. AU - Talmi-Frank, Dalit. AU - Baneth, Gad. PY - 2012/5/25. Y1 - 2012/5/25. N2 - A species of Hepatozoon closely related to Hepatozoon felis found in the skeletal and cardiac muscle of a wild Pampas gray fox (Lycalopex gymnocercus) is described. The fox was euthanized after showing severe incoordination. On necropsy and histopathology there was bilateral, diffuse, severe, sub-acute, necrotizing bronchointerstitial pneumonia, with intracytoplasmic and intranuclear eosinophilic inclusion bodies. Canine distemper virus was detected by immunohistochemistry in the bronchiolar epithelium, syncytial cells, alveolar macrophages and pneumocytes. The skeletal muscle and myocardium contained multiple round ...

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Alarge pet vaccine program, a stepped-up effort to trap more gray foxes and the remote possibility of raining vaccinations from the sky are all potential reactions to a rabies outbreak in the Cave Junction area.

Aposematism, or the use of conspicuous contrasting coloration which warns potential predators that the bearer possesses some noxious quality, has been greatly understudied in mammals. I propose to examine aposematic signaling in mammalian carnivores with respect to the ecological and morphological factors which enhance detection, potential defensive strategies and the ultimate mortality consequences of these signals. To evaluate these parameters I plan to use a series of field experiments involving the alternate presentation of taxidermy mounts of striped skunks (Mephitis mephitis) and grey foxes (Urocyon cinereoargenteus) at baited camera stations. I will use motion-sensitive digital cameras with infra-red illumination to record frequency and proximity of heterospecific and conspecific visits to these mounts ...

A gray fox (ground) and a Virginia opossum (tree) are feeding upon ripe persimmons in Great Smoky Mountains National Park. Both animals are omnivores-they eat plants and animals.

... 2 is a simulation of the Russian Ka-50 attack helicopter and the next entry in the Digital Combat Simulator combat series. DCS: Black Shark 2 is a greatly improved version of the original DCS: Black Shark that brings many new features.. The Ka-50 "Black Shark" is a unique and deadly single-seat, Russian attack helicopter that has seen combat in the Northern Caucasus. It combines a high performance dual rotor system with a deadly weapons payload of guided missiles, rockets, bombs, and a 30mm cannon. The Ka-50 is also unique in that it has an ejection seat.. ...