One of the reasons many people give for getting a large dog is home protection. A Florida family’s mastiff and great dane mix named Jager did his owners proud, when he attacked a person breaking into their home earlier this month.

“I heard a loud crash. My dog started going nuts, and I jumped up ran out and he had somebody by the right arm shaking,” Christopher Ceasario, who had been sleeping in his Deltona, Florida home at the time of the early morning incident, told WKMG-TV.

Jager bit an intruder causing him to leave behind a spot of blood that authorities are using to try and track him down. (Image source: WKMG-TV)

Jager bit an intruder causing him to leave behind a spot of blood that authorities are using to try and track him down. (Image source: WKMG-TV)

The intruder was able to break free of the dog and ran away. Investigators using a K-9 unit to track the suspect afterward think he used a getaway car, because they couldn’t track him past the street.

But, Jager’s actions gave authorities at the Volusia County Sheriff’s Office a valuable clue: a bloody hand print. Investigators are conducting DNA analysis on it hoping it could yield more information, but the family mostly thanks the dog for preventing the situation from escalating.

“Who knows what he would have done if my dog didn’t wake up,” Ceasario told the news station.

The Sheriff’s office is offering a $1,000 reward for information that leads to an arrest. According to the police report, the man was skinny and of an unknown race, wearing all black and a face covering. There would be bite marks in his right arm.

“Just watch out. You’re going to get caught one day. You’ll get caught,” Ceasario said.

And perhaps he knows from experience.

Two records — one from 2011 and one for 2012 — appear to show a man with the same name, look and location as Ceasario and note his arrest on these occasions for theft. These records are corroborated by published jail dockets.