Lion Boy, trilogy by Zizou Corder. It's a fun story. A boy named Charlie Ashanti has an ability to speak with cats - and realize that this gives him a lot of advantages, especially after his professor parents were kidnapped. Then he began a journey to find his parents and end up rescuing 6 circus lions, trapped in Venice, and lots of dangerous yet exciting adventure! Will he find his parents? Will he be able to help his lion friends to go back to their home, the jungle? You'll never know before you read it.
I just finished the first and second book, and going to get the third one tomorrow. Can't wait!!
By the way, I have finished another trilogy before this, The Bartimaeus Trilogy by Jonathan Stroud. It's about wizards' world, but it's not like Harry Potter, it's darker. The witches and wizards are not friendly and they love power, status, to be above and rule the commoner (that's how the wizards call muggles in this book). It's a nice novel and it is said that it is a New York Times best-seller too. You should try it. Well, you might feel it's too descriptive and sometimes got bored with it, but it's still make you curious. Like I said, you'll never know before you read it!
Give it a try, good for time-killer.. ('^,)*