Britney Spears has ripped into husband Kevin Federline in a new song inspired by tigers, related Reuters. The lyrics seemingly criticize her husband as Britney sings: "Be wary of others, the ones closest to you, the poison they feed you and the voodoo that they do.

"You'll find that in rebellion your body stops breathing, they do not believe what they're seeing."

Associated Press source said: "She's got a thing for tigers now. "It's because they're a mysterious and powerful animal and incorporate a spirit of free-mindedness."

Britney Spears's spokesperson has refused to reveal whether the unusual song will feature on her new album, only saying: "There's no immediate plan for a new album, but Britney is in and out of the studio regularly."

Meanwhile, Britney Spears is reportedly "livid" that husband Kevin Federline spent last weekend partying in Las Vegas.

According to the Daily Mirror, Kevin flew his friends from Los Angeles to Las Vegas for a party.