Royal Mail has stopped deliveries to a house in Leeds after postal workers came under attack from an elderly cat.
Tiger is said to have scratched postal workers and chased them down the garden path at his home in High Bank Street, Farsley, over the past few weeks.
Owner Tracy Brayshaw, who must now pick up mail from the nearest sorting office, said the ban was "a bit silly".
She added: "We're talking about a 19-year-old geriatric cat here who likes lazing out in the sun."
Mrs Brayshaw, 43, a pharmacy dispenser, said the black-and-white cat slept for 20 hours a day but was always ready to pounce on unsuspecting staff.
'Not a monster'
She said: "There have been three incidents where Tiger's jumped through the cat flap and is said to have scratched a postie, so they've decided to suspend our post.
"He's never done anything like this before."
Mrs Brayshaw's daughter, Amy, 17, said: "Tiger sleeps, he drools when he sleeps and he likes climbing trees, but in the space of three weeks we've had our post banned because he has attacked the postman.
Tiger is said to like lying in the sun and climbing trees
"Apparently he attacked one postman on the leg and on the arm and chased him down the garden path.
"He is very territorial but he's just an average cat really. We are all saying it's health and safety gone mad.
"He wakes up in the middle of the night meowing because he just wants some attention. He's not a monster."
In a statement Royal Mail said: "We are sorry for the inconvenience to Mrs Brayshaw and, as we want to resume delivery of mail to her address as quickly as possible, we're trying to agree a way to do this and avoid our employees suffering further nasty injuries, as has happened three times already."