SAUGUS – It was love at first sight Friday when three sled dogs trotted into the Public Library and into the arms of nearly three dozen children and parents.The kids sat patiently on the floor and the parents ringed the community meeting room while Harry and Lela Schlitz, owners of Mountain Mushers, spun tales of sled dogs. The pair, who hail from Montana, have been in the area for a month now, visiting libraries and introducing children to all things sled dog related -including their dogs.Before the main attractions were brought in, Lela, a retired teacher, talked to the kids about the importance of “exercising your brain” by reading and suggested books such as the Jack London classic, “Call of the Wild,” “Balto and the Great Race,” “The Three Snow Bears” and “No End In Sight” about a blind dog sled racer.Harry then took the kids through his own tale of becoming hooked on sled dogs after taking a dog sled ride in 1992. After giving a ride to a fourth grade teacher, then visiting her class with the dogs and sled in tow, Harry Schlitz knew he had found his calling. The Schlitzes now travel nationwide discussing dogs, dog safety, sled dogs and using one of their dogs, Su – a huge, fluffy show off of Alaskan Malamute – as a therapy dogs.But it wasn’t until Su and her friends, Pixie and Sorrel, made their entrance that the Schlitzes had their littlest audience members’ complete, undivided attention.Su strolled in, dropped to the floor, rolled onto her back and howled a welcome that sent the children into fits of giggles. Next came Pixie and Sorrel – both Alaskan Huskies and retired sled dogs – tall, lean and, according to Harry Schlitz, still eager to run.The dogs remained remarkably calm while the children patted, stroked and cooed at them. When Su had had enough, she gently ducked under a table.Nine-year-old Caroline DeMasi clutched a small book about Pixie, written by Lela Schlitz, and showed off Pixie’s autograph.”You can’t really see it but it’s there,” she said after watching Lela press Pixie’s paw onto a page in the book. “I think they are just amazing.”Caroline said she would be willing to go for a ride, but she wasn’t sure she’d like to drive a sled. Harry Schlitz told the children it was not as easy as it looked. During his first outing he said he forgot the dog’s names, forgot the commands and then fell off the sled.”And they kept running,” he said. “They had to learn to trust me.”Jordan Courtoris, however, jumped onto the back of the sled as her twin sister Janee climbed inside ready to take a run. Alanna Felix donned a fur lined hat and gloves and stepped onto the runner behind Jordan calling out “mush” and “hike,” commanding a team of stuffed animals tied to the sled.”I could do this,” Felix said.