He couldn't be blamed for being shocked at the sight of the beast. The sonic deer was a special magic beast that was different from other magic beasts despite being weak.
The difference was that they could already use special abilities despite being only common rank beasts, this made them incredibly difficult to get hunted down by explorers.
Other magic beasts had to wait till they reached at least the Transformed beast rank before they could mobilize the mana in their cores and use special abilities, some even needed to get stronger, reaching the Divine rank first!
But the sonic deer was different, right from the common beast rank, they could already use special abilities.
The horn on its head was how it used its special abilities. Like the name implies, the sonic deer could pick up sonic waves from a certain distance around them. This made them difficult targets to sneak up on.
