How does a T. Rex throw out the opening pitch with such tiny arms? Oh, that’s how.

A costumed dinosaur, Baby T, from “Walking with Dinosaurs” throws out the first pitch before a game between the Royals and the Padres at Petco Park. (Denis Poroy/Getty Images)

Before Wednesday’s Royals-Padres game, things got a wee bit Jurassic at Petco Park. A pretty realistic-looking dinosaur — to the degree that we have any idea what dinosaurs actually looked like — came out to the mound to throw the opening pitch. On the other end was the Padres mascot, Swinging Friar, who is a much less realistic-looking man of the cloth, but enough about him.

The Tyrannosaurus rex was in town to promote a November visit to San Diego by the “Walking With Dinosaurs” show, so what better way to drum up early interest than to make a dramatic appearance at a baseball game? The only question would be how Baby T would make the throw, and the answer turned out to be obvious. Instead of even attempting to use one of its teeny, little arms — or any of its unfortunately costume-mandated four legs — the dino simply grabbed the ball by its huge mouth and hurled it toward ol’ Friar.