Thousand Islands National Park area to defend the British from American invasion. Inside the park, Cedar Island, a small island visible from downtown Kingston, Ontario, is the site of a Martello tower named Cathcart Tower. The park was established in 1904, the first Canadian national park east of the Rocky Mountains. It was called "St. Lawrence Islands National Park" until 2013, when it was renamed to "Thousand Islands National Park" to reflect the natural area in the name. In 1997, the park was named one of the national parks with the highest levels of ecological impairment. Animals that inhabit this national park are coyotes,
North American river otter length. A shorter trachea may improve air exchange and increase lung ventilation in diving mammals. Most mustelids, including otters, have specialized teeth, including sharp canines and carnassials that inflict lethal bites to prey. Also, North American river otters have large molars used for crushing hard objects, such as the shells of molluscs. An adult North American river otter has a total of 36 teeth. Additional premolars may be present. The dental formula is . North American river otters are active year-round, and are most active at night and during crepuscular hours. They become much more nocturnal in the spring, summer,