Sean Pursifull, 31, of Bell County and his service dog King were killed when a car driven by 17-year-old David Poppiti of New Castle, Delaware struck the officer's car in a high-speed chase.
Poppiti was with Eric Gerren, 16, of Lincoln University, Pa. They were trying to run away from police after a gas station drive-off.
Both have been charged with murder and assault of a service animal.
The Reverend David Peters said Pursifull "poured his whole heart into that uniform," and added he "was willing to pay the ultimate price."
Information from wire reports were used for this story.
