The residence is located in northern Temecula off a dirt road with a sprawling, grassy front yard surrounded by wire fences. A tall gate with a thick chain and bulky lock secured the grounds.
A red barn and a large mobile home are atop a slope about a quarter-mile from the dirt road.
When animal control officers initially arrived, packs of dogs attacked each other, and the officers saw other horrifying acts, Bagwell said Saturday.
About 70 dogs circled officers and threatened to attack, leaving authorities with no choice but to euthanize the animals, she said.
The mobile home had been turned over to the animals, Bagwell said. Officers even discovered animals hiding in cupboards.
"The smell, I can't tell you how bad the smell was," Bagwell said.
Outside, there were more than 100 plastic trash bags filled with animal feces and animal corpses, Bagwell said.
"He didn't know what to do with them," she said.
Jimenez put animals that had died into bags instead of burying them because he didn't own the property, Bagwell said.
"He was very calm," Bagwell said of Jimenez. "He was like, OK, it's over."