I have many leaves, but I am no tree. I have days and weeks, but no time to see. I can tell you the future, but only for a year, Then you’ll throw me away when the new ones appear.

I flow in secret, dark and deep, A vital promise I'm meant to keep. But break the walls that hold me tight, And I will rush into the light. I am a crimson, rushing flood, An urgent spilling of your blood. When structural bounds begin to fail, Doctors rush and faces pale.

How do you tell if Lady Gaga is dead or just asleep?

Maybe not the best big cat, Although I'm pretty GRRREAT, I hide so well that when you see me, It's probably too late

If I'm red, beware! If I'm white, I give up! When I'm black, you no longer qualify. What am I?