Nena Mazzei-Schmidt, executive director of the Walk In Art Center, Schuylkill Haven, Pa., enjoys a kiss from Mazie, pet of Kaeley Walton, Orwigsburg, Pa., at the Paw-Casso: Art by Dogs event at The Walk In Art Center in Schuylkill Haven, Pa. Saturday, May 2, 2015. Donations benefited Hillside SPCA in Pottsville, Pa. (Jacqueline Dormer/Republican-Herald via AP)
Jim Caravan, holds his dog Abba as Missi Allen, Walk In Art Center studio artist, applies her painted paws to a canvas at the Paw-Casso: Art by Dogs event at The Walk In Art Center in Schuylkill Haven, Pa. Saturday, May 2, 2015. Donations benefited Hillside SPCA in Pottsville, Pa. (Jacqueline Dormer/Republican-Herald via AP)
Rogelio V. Solis
"Brutus", an accelerant detecting labrador for the City of Jackson, Miss., Fire Department, searches for a hidden package of accelerant in a burned out house in Jackson, Miss., Monday, May 4, 2015. "Brutus" and his counterpart "Sita", owned by the Mississippi State Fire Marshal department, were put into their detection paces during a training exercise for media to highlight Arson Awareness Week in Mississippi. Both dogs have a history of assisting investigations resulting in several arrests. (AP Photo/Rogelio V. Solis)
Amy E. Voigt
Trainer Jim Osorio, of Texas-based Canine Encounters Law Enforcement Training, left, shows the class an example of dog aggression with his German Shepherd named K9 Coral, and Rogelio Rubio Jr., with the Napoleon Police Department, during an eight-hour training session specific to law enforcement hosted by the village of Woodville at the Woodville United Methodist Church on May 4, 2015. The training emphasized nonlethal measures officers can take when they encounter dogs.
Bronksey, a service dog in Staten Island District Attorney Dan Donovan's office, gets up to leave after an election night gathering, Tuesday, May 5, 2015, in the Staten Island borough of New York. Through a special election held Tuesday Donovan won the 11th Congressional District seat vacated in January by former Congressman Michael Grimm, who resigned after pleading guilty to one count of federal tax evasion. (AP Photo/Julie Jacobson)