And it saw Antonio. For an instant, perhaps, the Qul-En was alarmed. But Antonio did not kneel; he made no motion which the pilot--seeing through infra-red-sensitive photo-cells in the lion's eyeballs--could interpret as offensive. So the machine moved boldly toward him. The dog dangling from its throat could be disregarded for the moment. The killing-ray was absolutely effective, but it did spread, and it did destroy the finer anatomical features of tissues it hit. Especially, it destroyed nerve-tissue outright. So the closer a specimen was when killed, the smaller the damaged area. The being inside the mountain-lion was pleasantly excited and very much elated. The biped stood stock-still, frozen by the spectacle of a mountain-lion moving toward it with a snarling dog hanging disregarded at its throat. The biped would be a most interesting subject for dissection, and its means of offense would be most fascinating to analyze.... Antonio's fingers, contracting as the shape from the ship moved toward him, did an involuntary thing. Quite without intention, they pulled the trigger of the rifle. The deeply cross-cut bullet seared Salazar's flank, removing a quarter-inch patch of skin. It went on into the shape of plastic and metal, hit a foreleg. Although that leg was largely plastic, what metal it contained being mostly magnesium for lightness there were steel wires imbedded for magnetic purposes. The bullet smashed through plastic and magnesium, struck a spark upon the steel. There was a flaring, sun-bright flash of flame, a dense cloud of smoke. The mountain-lion shape leaped furiously and the jerk dislodged the slightly singed Salazar and sent him rolling. The mountain-lion vehicle landed and rolled over and over, one leg useless and spouting monstrous, white, actinic fire. The being inside knew an instant's panic; then it felt yielding sheep-bodies below it, thrashed about violently and crazily, and at last the Qul-En jammed the flame-spurting limb deep into soft earth. The fire went out; but that leg of its vehicle was almost useless. For an instant deadly rage filled the tiny occupant of the cabin where a mountain-lion's lungs should have been. Almost, it turned and opened the mouth of its steed and poured out the killing-beam. Almost. The flock would have died instantly, and the man and the dog, and all things in the wild for miles. But that would not have been scientific; after all, this mission should be secret. And the biped.... 4 The Qul-En ceased the thrashings of its vehicle. It thought coldly. Salazar raced up to it, barking with a shrillness that told of terror valorously combatted; he danced about, barking.