A javelina attacked a woman who was walking her dog near East Snyder and North Sabino Canyon Road Monday, according to Arizona Game and Fish officials.
The department is warning the public to be cautious around the animals.
Mark Hart with the department says the attack happened at 8:30 p.m. Monday. The javelina left the woman with two two-inch gashes on her knee.
There was also a javelina attack March 25 in Oro Valley.
Hart says a javelina can't tell the difference between a coyote and a dog.
"We want people to understand that first off it's spring and people are out and so is the wildlife very active at this time," he said. "If you are out walking your dog and see a javelina immediately turn around and go the other way. More often than not when someone of bitten by a javelina or injured in any way it's because a dog is involved."
He explained the second leading cause of javelina attacks is when a dog is present, and the first is when a person is feeding them.
"Never feed wildlife or any species," Hart said. "It's illegal in Pinal, Pima, and Maricopa Counties to do so and you could be fined $300 for it in part because of the risk."
Hart pointed out some defensive javelina behaviors to look out for are growling, snorting or teeth clacking.
He says javelinas don't see humans as a threat, but when a dog is involved, they are more likely to attack.