lower1. 1  to cause to descend; let or put down: to lower a flag. 2  to make lower in height or level: to lower the water in a canal. 3  to reduce in amount, price, degree, force, etc. 4  to make less loud: Please lower your voice.
Biggest Whale-Basilosaurus (60 Tons). Basilosaurus (Nobu Tamura). Unlike the other mammals on this list, Basilosaurus can't lay claim to being the largest-ever of its breed--that honor belongs to the still-extant Blue Whale, which can grow to as much as 200 tons.
Elephants are the largest living land mammals. The largest elephant recorded was one shot in Angola, 1974. It weighed 27,060 pounds (13.5 tons) and stood 13 feet 8 inches tall. Their skin colour is grey. At birth, an elephant calf may weigh 100 kg (225 pounds).