Today is a Red Sox off day. Some players will fish. Others play golf. Dustin Pedroia has a hobby that falls a little outside the box — the search for Bigfoot. You probably knew that if you follow Pedroia on Twitter (@15Lasershow), where a “Sasquatch Crossing” sign serves as his avatar. This spring, he walks around, a lot, in a light blue T-shirt with a Bigfoot drawing on it. His next-door neighbor in the clubhouse, Will Middlebrooks, says Bigfoot is all Pedroia talks about, not only the TV show about the search but Bigfoot himself. Middlebrooks is convinced that Pedroia believes in Bigfoot “120 percent.” Pedroia is noncommittal. A little like Carl Everett was when it came to the subject of dinosaurs, he hasn’t seen foolproof evidence with his own eyes yet. The search for Bigfoot, though, that matters. Pedroia believes in the search for Bigfoot. Bigfeet, actually. “There’s gotta be” more than one, he said yesterday. “I don’t know, I haven’t seen them. Keep looking for them.” Pedroia does not miss episodes of Animal Planet’s “Finding Bigfoot.” “It’s good, man, it’s good stuff,” he said. Pedroia is up to date on all the claims, old and new, of the tall, lumbering creature known for its putrid stench, humongous footprints, ape-like noises and extremely reclusive habits. He said the Les Trout-Sasquatch YouTube videos are “pretty cool.” He is not into the Loch Ness monster, but Yeti (the Abominable Snowman, believed to be roaming the Himalayan Mountains) is “probably from the same family, probably from the same origin.” The idea that all the Sasquatches must be breeding brings up the idea that there are baby Sasquatches sequestered in the woods somewhere. “They call them juvenile Sasquatches,” Pedroia informs a newcomer to the search. The conversation makes Pedroia a bit wary. “It’s not a big deal, it’s normal stuff,” he said.