What happens to Britney Spears' pets? The case of the disappearing doggies...

There was the Chihuahua named "Bit Bit," there was "Lacy" a Yorkie she bought on a whim at Pets of Bel Air, some little white poodle like thing named "Baby," never seen again, any of them. And now, her latest addition is Hannah, ("I'm Britney's bitch" Britney twittered with her pic), funny thing though, Hannah has already been to the vet with a serious health issue on December 4, 2012. What becomes of Britney's pocket-size pooches? Do they end up at animal shelters when she's tired of them? Small dogs have a fairly long life expectancy, sometimes 20 years or more, these dogs have disappeared from view after just a few months!