He didn't have any appraisal skills nor did he have any search skills, but those weren't required in the first place because he had a system.
Probably he expected the system to do those works.
'System, can you determine what kind of beast is nearby?', Shin asked.
He could feel a faint aura so he was sure that there was something nearby. But he had no idea of what it was.
'Ding'
[ Affirmative ]
[ Detecting... ]
It took a second or two for the system to find out what kind of beast was nearby.
'Ding'
[ A Green Poison Lizard found ]
[ Advice: The system advises the host to ignore it and move forward for another mile to find a Mariorack Deer ]
Shin had absolutely no reason to ignore the system's advice. But, he ignored it for the time being.
His reasoning was way bizarre but was somewhat correct. He wanted to eat the lizard just because the word 'Poison' was mentioned.