Uma Thurman uses Google to help her look after her ''tyrant'' child.

The 44-year-old actress admits her two-year-old daughter Luna - from her relationship with former partner Arpad Busson - has been scratching and biting her so much she had to look up on the internet if that was normal for a youngster because she didn't have that experience with her older two kids, Maya, 15, and Levon, 12.

She said: ''Now I have a kid who bites and scratches and does all these things that I'm not used to.

''So I'm having to go on to the internet and Google two-year-old behaviour. OK, biting and scratching is normal.

''But she's completely charming.''

The 'Kill Bill' star - who had her first two children with ex-husband Ethan Hawke - admits she has certainly learned a lot more about child behaviour since giving birth to Luna after finding it ''easy'' to bring up her Maya and Levon.

She added in an interview with Britain's HELLO! magazine: ''It's definitely different. She's a wonderful little tyrant and that's definitely a lesson to me because the first two were so easy.''