Nala's leg has been cracking when she walks ever since last night. you know the sound when you crack yout knuckles or neck? Or the sound when you get up and your bones 'crack'? well that's how it is when she walks.

What could be wrong with her leg to cause it? I've massaged them many times/moved them around. Any advice, please?

I'm going to ask my parents to bring us to the vet if it doesn't stop.