Here is a picture of a skull of the extinct sabertooth cat Smilodon . This 'Sabertooth Tiger' had big teeth.
Textbooks say the way science is done is to set up experiments to test hypothesizes.
This animal is long extinct, and isn't around for us to experiment with. Experiments, however, are only one part of science. Also, absolutely key are creativity and imagination. Neat new ideas are the engine of science. Dissonance, Staging, Uniformity, Concilience of induction.