blood vessel-a vessel in which blood circulates. vein, vena, venous blood vessel-a blood vessel that carries blood from the capillaries toward the heart; all veins except the pulmonary vein carry unaerated blood. venous blood system, venation - (zoology) the system of venous blood vessels in an animal. lymph gland, lymph node, node-the source of lymph and lymphocytes. vascular system-the vessels and tissue that carry or circulate fluids such as blood or lymph or sap through the body of an animal or plant. fetal circulation, foetal circulation-the system of blood vessels and structures through which blood moves in a fetus.
Squirrels are dangerous, not necessarily to humans but to their property. Squirrels will chew through and damage the structure of homes and personal property, including electrical wiring, which is a fire hazard.
Conservation Status: Flying squirrels are common rodents in many parts of the country, but because they are nocturnal, few people ever see them. Two subspecies of northern flying squirrel are federally listed as endangered due to habitat loss.orthern flying squirrels are 10 to 12 inches long. Diet: Flying squirrels are omnivores. They eat a variety of foods including seeds, nuts, fungi, fruit, and insects. Southern flying squirrels are considered to be one of the most carnivorous squirrels, because they supplement their diet with eggs, birds, and carrion.