My Grey Tree Frog is 8 months old and he has a new habit. He drown his crickets before he eats them. I will drop a medium cricket in his tank and he will grab in and carry the cricket to his pool and drown it. Then he eats it. I always feed him medium crickets and he just started to drown them. If I give him a dead cricket he will not eat. He will only eat alive crickets, flies, grasshoppers, etc.. For some reason he drowns them than eats them. Oh almost for got he only drowns the crickets. Is this normal?