Heard about Mischief the foul-mouthed feline?

A bloke in the Northern Territory reckons his pet cat Mischief can speak English and has a vocabulary of seven different words.

The Northern Territory News reports that ex-boxer Robert 'RJ' Duncan, of Palmerston, claims his cat can say seven words: mum, no, now, what, f**k, pr*ck and why.

"He can't say 'dad' yet, which is a bit of a pr*ck. That's how he got the word 'pr*ck' I reckon, because I say it a lot."

When the Northern Territory News first visited Duncan, 34, and his wife Sandra, 32, at their Gray home, the house-bound moggie grumpily declined to comment.

Instead, he scratched Mr Duncan a few times before bolting to his bedroom and barricading himself in his cupboard.

During a second visit, Mischief was much friendlier - and more talkative. All gathered heard him speak to Sandra, calling her "mum".

Mr Duncan said the two-year-old cat - which he and his wife adopted from his feral mother in Katherine - was most vocal at night.