FOR RELEASE SUNDAY, JANUARY 19, 2014, AT 12:01 A.M. CST.-Students Adaline Utley, 11 from left, Miranda Villegas, 13, Bryan Gonzaless, 14, and Trinity Ramos, 13, take a moment to pet Tango a 4 year old Leonberger in D'Nae Wilson's Mutt-I-Grees Class at Levelland Middle School Wednesday Jan. 15, 2014. Wilson uses the dog to help teach the class. (AP Photo/Lubbock Avalanche-Journal, Stephen Spillman)