Intermittent claudication can be due to temporary artery narrowing due to vasospasm (spasm of the artery), permanent artery narrowing due to atherosclerosis, or complete occlusion (closure) of an artery to the leg. The condition is quite common, more so in men than women.
The GalÃ¡pagos tortoises are native to seven of the GalÃ¡pagos Islands, a volcanic archipelago about 1,000 km (620 mi) west of the Ecuadorian mainland. With lifespans in the wild of over 100 years, it is one of the longest-lived vertebrates. A captive individual lived at least 170 years. Spanish explorers, who discovered the islands in the 16th century, named them after the Spanish galÃ¡pago, meaning tortoise. Shell size and shape vary between populations.
The endemic Galapagos fur sea lions are the smallest among the world's seven species of fur sea lions. The Galapagos Marine Iguana is the only marine lizard to exist in the world. The Galapagos Islands are home to the world's largest cormorant and the only one unable to fly.Galapagos has one of the world's rarest ecosystems in which the herbivores at the top of the food chain are reptiles.Galapagos Swallow-tailed gulls are the only gulls in the world to feed at night.alapagos Animals. The Galapagos penguin is the only to be found in the northern hemisphere and to breed in the tropics. A Galapagos tortoise can weigh up to 595lb (270kg) with a carapace length of 4ft (1.2m) and outlive most humans.