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Miscarriage occurs in all animals that experience pregnancy, though in such contexts it is more commonly referred to as a spontaneous abortion (the two terms are synonymous). There are a variety of known risk factors in non-human animals. For example, in sheep, miscarriage may be caused by crowding through doors or being chased by dogs. [163]
Some animals may experience vaginal secretions that could be bloody. The female is not yet sexually receptive; the old corpus luteum degenerates; the uterus and the vagina distend and fill with fluid, become contractile and secrete a sanguinous fluid; the vaginal epithelium proliferates and the vaginal cytology shows a large number of non ...
In Defense Of Animals says, "In the wild, elephants thrive into their 60s, raising calves well into their 50s and roaming up to 30 miles daily.In zoos like Los Angeles Zoo, where enclosures are ...
Since most aneuploidy events result in stillbirth or miscarriage, there is an evolutionary advantage to ending the pregnancy early, rather than nurturing a fetus that will later miscarry. There is evidence to show that some abnormalities in the developing embryo can be detected by endometrial stromal cells in the uterus, but only upon ...
Animal psychopathology is the study of mental or behavioral disorders in non-human animals. Historically, there has been an anthropocentric tendency to emphasize the study of animal psychopathologies as models for human mental illnesses. [ 1 ]
An animal generally learns its natural predators through direct experience. Thus, predator learning is very costly and increases the predation risk for each individual. In group learning scenarios, a few members can experience the danger of predation and transmit this acquired predator recognition throughout the group.
In the weight loss phase, energy intake from food must be less than the energy expended each day. [17] Achieving weight loss in cats and dogs is challenging, and failure to lose weight is common. [17] If the animals themselves cannot control their own calorie intake, it is recommended that pet owners control the food amount given.
Wild animals can experience injury from a variety of causes such as predation; intraspecific competition; accidents, which can cause fractures, crushing injuries, eye injuries and wing tears; self-amputation; molting, a common source of injury for arthropods; extreme weather conditions, such as storms, extreme heat or cold weather; and natural disasters.