A black bear wondered into a New Jersey family's yard and was forced up a tree - twice - by the family cat.

The unwelcome intruder was forced up a tree - twice - by the family pet, a tabby cat called Jack.

The terrified bear was only able to make its escape when owner Donna Dickey called the hissing cat into the house.

Ms Dickey said Jack liked to keep a close watch on his territory and often chased away small animals, but one of this size was a first.

"We used to joke, 'Jack's on duty', never knowing he'd go after a bear," Donna Dickey told local newspaper The Star-Ledger.

"He doesn't want anybody in his yard," she added.

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