In the dark, scary alternative ending to The Croods, the piranhakeets did not get deterred by Guy's fire and ate Guy and the Croods family.

As the family and Guy stand on the edge of the new world, watching as the dust storm that once blocked their passage finally dissipates, the silence is broken by an ominous sound. It’s like nothing the Croods have ever heard before, a cross between a squawk and a shrill shriek. Startled, they turn around to see a huge swarm of piranhakeets bearing down on them. In horrifying realisation, they scurry to put together a makeshift wall of boulders and sticks to fend off the impending attack. Guy, with his quick-witted ingenuity, manages to light a fire. He waves it bravely towards the piranhakeets, hoping it’ll keep them away. But unlike before, the fire doesn’t faze the creatures. In their change from the old world to the new one, they've become advanced enough not to fear the flames. The Croods and Guy watch with horror as the piranhakeets keep advancing, undeterred by the bright, blazing fire. The situation turns chaotic as the piranhakeets close in. The Croods fight valiantly but are overwhelmed, their primitive weapons proving no match for the dangerous beaks and talons of the piranhakeets. Meanwhile, Guy tries his best to hold the fort, his arms getting weary from swinging the fire but he refuses to let it extinguish. However, the onslaught of the piranhakeets is just too much. And with a surprisingly swift move, one of them bashes the fire out of his hand. The Croods watch helplessly as Guy falls, the swarm obscuring him from their sight. One by one, the family members meet a similar fate, their screams echoing in the unforgiving landscape. The swarm finally disperses, leaving behind nothing but a grim silence. The new world that once promised a fresh beginning, now stands as a testament to their tragic end. The only sign of life left is Belt, Guy's loyal pet, hiding behind a large rock. As he emerges from his hiding, he gazes at the desolate scene in horror and sadness. With a sorrowful squeal, he picks up a small stone, the 'tool' that once symbolized hope for the Croods, and trudges away alone into the fading sunset—carrying the memory of his fallen friends into the unknown future.