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.
The largest animal to ever live on our planet is the blue whale. It's tongue weighs as much as an elephant. It's heart is the size of a Volkswagon Beatle, and some of it's bloâ¦od vescles are so wide you could swim in them. So most likely it will have the largest testicles.