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.
You won't believe these 10 facts about people. The largest land animal that ever lived is likely Amphicoelias fragillimus, a sauropod dinosaur known only from a single vertebra fossil fragment, measuring 1.5 m (5 ft) in height, which has since been lost. In its complete form, it was estimated the entire vertebrae fossil would have been 2.7 m (8.8 ft) tall.