The largest animal on Earth is the blue whale, but maybe there are larger animals out their in the Universe. Perhaps there are alien species that are really really large! Do you believe in aliens?
Yep, everyone’s got it! The blue whale! On the other end of the scale the smallest vertebrate animal is a species of frog that’s only 7.7mm in length! It’s called the Paedophryne amauensis and was only discovered in 2012.
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