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... sort { $data{$a}{stride_length} <=> $data{$b}{stride_length} } ...
#!/usr/bin/env perl -l ... Euoplocephalus,1.6,herbivore Stegosaurus,1.40,herbivore Tyrannosaurus Rex,2.5,carnivore
Triceratops 0 0.87 Hadrosaurus 1.4 1.2 Euoplocephalus 1.87 1.6 Stegosaurus 1.90 1.40