Mufasa perks his ears when he sees Allen, only to see him blanch and hide, his ear flicking a little at the noise. Was that... some sort of baboon? The animals that Mufasa are encountering here truly get stranger and stranger.

Well, it's certainly no surprise that he would be frightened; Mufasa is a full-grown lion, after all. He stays stationary, seeing no need to panic whatever it was any further.

However, he does opt to speak, since he does need information.

"There is no need for alarm; I have no desire to harm you. I only wish to know where the king of these lands resides, so that I may speak to him."