Upon sensing the mana fluctuations of the Ratmen, Nial immediately noticed that it was not only stronger than the petrification rats in terms of physical strength, but that almost every possible trait of it was relatively enhanced.
This became only clearer when one of the young men let out a squeal.
"Close your eyes!"
His voice resounded through the cave and alerted one of the Ratmen who quickly used a portion of his mana to circulate it towards its eyes, making it seem as if they were glowing, even in his visualization that dispersed only a moment later.
Having used some mana in order to be barely able to visualize the Ratmen, Nial's assumptions were reaffirmed that it was just a gigantic Rat that could walk on two legs.
Other than that, it looked just like any other rat according to what he visualized.
There might be some other factors the others had noticed, but Nial had to digest the information he could procure because he was unable to trust the others completely.