Hotel heiress Paris Hilton has been severely criticized by many animal rights activists for having dumped her pampered dog Tinkerbell because she grew too big.

Apparently, Paris has left the dog in her mother's care, as it has grown past its ideal weight of 3.5 pounds (1.6 kilograms), and now she's pampering a smaller Chihuahua named Bambi.

"It's a pity that Paris' heart doesn't match her pocketbook. Animals shouldn't be disposed of like last season's trendy handbag", said a PETA (People For The Ethical Treatment Of Animals) spokesman.