"However, according to our previous agreement, you cannot leave yet, Norde's Bartlett, the formidable Adventurer," Baron Collins said somewhat solemnly, "As I mentioned to you before, there might be more than one Scorpion-tailed Lion in this area."
Bartlett nodded since it was indeed what they had agreed upon earlier, but still...
"But there is indeed only one Scorpion-tailed Lion in the cave and I have already killed it." He pointed at the monster's corpse on the ground, "And the traces both inside and outside the cave have also proven this fact—the lair has no more of its kind, just this one."
Large wild beasts like Scorpion-tailed Lions, even if they can fly, are bound to leave many traces around their den, and Bartlett believed that there was no reason for him to overlook them.