Rhinos in danger of worldwide extinction. More than 200 species of mammal are distinguished by possession of hooves, known as ungulates, and are divided into two orders, even-toed and odd-toed ungulates. The smaller order is made up of three families - horses, rhinoceroses and tapirs.
They use regular optical glass and weigh 34.4g in 77mm size, with a 5.4mm thick mounting ring. The Pro-1 polarizers lose 1 2/3 stops of light and come in 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm and 82mm. The Nikon is a better filter at about the same price, but doesn't come in all the sizes that the Hoya Pro 1s do.
At 26.5 kg (58 lb), the heaviest langur ever recorded was a male Nepal gray langur. The larger gray langurs are rivals for the largest species of monkey found in Asia. The average weight of gray langurs is 18 kg (40 lb) in the males and 11 kg (24 lb) in the females.