Complex sentence: During the attack, the lion bit a hand-sized chunk of flesh from Craig's midriff.He recovered well from that injury.The second attack was when Craig didn't realise a lion was behind him and it pounced on him from behind nearly ripping his whole arm off.
Split into simpler sentences: During the attack, the lion bit a hand-sized chunk of flesh from Busch's midriff. It pounced on him from behind nearly ripping his whole arm off.