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Stomach cancer. Melena is a form of blood in stool which refers to the dark black, tarry feces that are commonly associated with upper gastrointestinal bleeding. [1] The black color and characteristic strong odor are caused by hemoglobin in the blood being altered by digestive enzymes and intestinal bacteria. [2]
Blood in stool looks different depending on how early it enters the digestive tract—and thus how much digestive action it has been exposed to—and how much there is. The term can refer either to melena, with a black appearance, typically originating from upper gastrointestinal bleeding; or to hematochezia, with a red color, typically originating from lower gastrointestinal bleeding. [6]
Cat senses. The large ears, eyes, and many vibrissae (whiskers) of the cat adapt it for low-light predation. Cat senses are adaptations that allow cats to be highly efficient predators. Cats are good at detecting movement in low light, have an acute sense of hearing and smell, and their sense of touch is enhanced by long whiskers that protrude ...
Cats are carnivores that have highly specialized teeth. There are four types of permanent dentition teeth that structure the mouth: twelve incisors, four canines, ten premolars and four molars.[ 1 ] The premolar and first molar are located on each side of the mouth that together are called the carnassial pair.
Feline leukemia virus (FeLV) is a retrovirus that infects cats. FeLV can be transmitted from infected cats when the transfer of saliva or nasal secretions is involved. If not defeated by the animal's immune system, the virus weakens the cat's immune system, which can lead to diseases which can be lethal. Because FeLV is cat-to-cat contagious ...
Cats can use a range of communication methods, including vocal, visual, tactile and olfactory communication. Up to 21 different cat vocalizations have been observed. [ 3 ] They use visual signals, or body language, to express emotions like relaxation, fear, and aggression. Cats use several types of tactile behaviors to communicate, such as ...
Feline arterial thromboembolism. Feline arterial thromboembolism (FATE syndrome) (German: Feline arterielle Thromboembolie) is a disease of the domestic cat in which blood clots (thrombi) block arteries, causing severe circulatory problems. Relative to the total number of feline patients, the disease is rare, but relatively common in cats with ...
The domestic cat has a smaller skull and shorter bones than the European wildcat. [ 49 ] It averages about 46 cm (18 in) in head-to-body length and 23–25 cm (9.1–9.8 in) in height, with about 30 cm (12 in) long tails. Males are larger than females. [ 50 ] Adult domestic cats typically weigh 4–5 kg (8.8–11.0 lb).