Jennifer Lopez and her former boyfriend Casper Smart have been sued by one of the singer-actress' neighbours over a dog attack.

The lawsuit filed by Andrea Ashley says she was bitten by Smart's dog, Bear, when she was getting out of her car in December last year, reports tmz.com.

Ashley said she was left with broken bones and cuts after the boxer breed dog mauled her left arm and hand. In the lawsuit, she included photographs of her injured arm and said Smart was in Lopez's house when the incident happened although the two broke up months earlier.

Ashley says after the incident, Smart walked out of Lopez's house wearing only pyjama bottoms and came over to apologize. She claimed this wasn't the first time Smart's dog had attacked her.

Back in April, Bear tried to attack her after escaping through a hole in Lopez's fence. She didn't get serious injury at that time because her gardener saved her.

Ashley said she was including Lopez in the lawsuit as the 45-year-old was also to blame for letting the dog escape through her fence.