The Deinonychus moved. Odottaen's pupils dilated and he once again lost himself to the madness completely, lost what little sentience and sapience Pachycephalosaurus had. Since he is unable to remember what he does in that short time span, I might as well describe it.
His dilated pupils made everything look much brighter - almost on a glowing white, holy level. The canyon walls looked like vast solid, near-shapeless, blurred blocks, and for a while he had forgotten about Reesk. Instead the Pachy had instantly head butted the wall and gripped a low overhanging rock he could not see and began to scratch marks into it with the little rooting horns on the end of his snout. He began to drool and the scent glands on his ankles began to release their ironically sweet, papaya-like smell. After Odo's brain had been satisfied, the Pachy had whirled around to search for the green Fastbitter he could smell, but not hear, and due to the dilated brilliance of the landscape, could hardly see.
He had come very close to stepping on Reesk's tail or, when the several amount of times the Pachy had aggressively head butted the ground, mere inches away from breaking the sharptooth's leg or head. The green only registered to Odo right now as a dark smudgey blob that smelled funny, and thus was obligated to be destroyed, but then the wind shifted and the scents of the Iguanodon herd reached his nose, and the Pachy bucked and again slammed himself to the canyon wall, snarled and ripped up the dry, baked earth with his back claws, and suddenly the madness faded. Odo's orange eyes went back to normal, and he could see again.
The Pachy was still for a very long time. His hands flexed, and the sudden attack of pain from his foot cause him to nonverbally signal distress, something no other dinosaur understood. The bonehead, very withdrawn and showing no signs of caring for Reesk's presence, laid down and carefully examined his foot, and found, to his dismay, the badly bleeding, empty toe where his claw had been.