If not being able to appreciate the Jonas Brothers is making you feel old, imagine turning 125 today.

An English cat named Mischief is celebrating his 27th birthday, which puts him just over one and a quarter centuries in cat years. According to the Guinness Book of World Records, the black kitty from Cornwall is the world's oldest living cat.

His owners, Chris and Donna Thorne, say that he's still going strong and living up to the name they gave him almost 30 years ago. "He still manages to jump over the stair gate, and he's round your ankles constantly for food," Donna told The London Telegraph.

Animal Bellies

    Twin tums.

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    So much better than a monkey on your back.

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    Tired tummy.

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    Just one belly rub. Please!

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    Full belly.

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    S-t-r-e-e-e-e-t-c-h.

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    Gerbil goodness.

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    Frank on a full belly.

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    Out cold.

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    Donkey konked-out.

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Mischief was born in 1981, making him as old as MTV, Beyonce and Pac-Man. Even at his advanced age, he's still 11 years younger than the oldest cat in recorded history, Cream Puff, a Texas feline who died three years ago at the ripe old age of 38.

Also on Lemondrop ... If the mental image of an elderly English cat in a party hat isn't painfully cute enough for you, check out these huggably tubby Obeasts (and click here to send us pictures of your own fat cats and doughy dogs).

Obeasts

    Xu Jirong holds his fat cat at home in Qingdao, a coastal city in east China's Shandong Province.

    Xu's nine-year-old pet weighs 15 kilograms and that its waist measures around 77 centimeters.

    This cat's more than a little bit of a couch potato.

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    This big guy's name is Hercules. He got stuck in his neighbor's pet door while trying to steal some dog food and had to be rescued by the Humane Society.

    AP

    Is it just us, or does that dog look scared?

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    "Stop standing next to me, you're making me look fat."

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    This labrador--named Chubby Charlie--was forced to go on a crash diet after ballooning to 168 pounds.

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    This big boy is a little down in the dumps. Perhaps it's the high carb diet?

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    These fat monkeys live in a tiny enclosure in a Japanese park. Around 30 percent of the monkeys that live in the park are overweight due to overfeeding by visitors.

    AP

    There's fat pigs, and then there's fat pigs.

    AP