In reference to the OP, the petroglyph at 3:35 in the video is pretty ambiguous at best. It's a stylized lizard and many of the pics online have outlined the animal's shape deceptively. Here's the actual petroglyph (and a larger version here):
And here's the same petroglyph as presented by the creationist site Genesis Park:
And here's the actual petroglyph outlined with what's actually there:
Nothing too mysterious. It's a stylized depiction of a lizard, a zoomorph commonly represented in ancient Pueblo people's art:
And here's the same petroglyph as presented by the creationist site Genesis Park:
And here's the actual petroglyph outlined with what's actually there:
Nothing too mysterious. It's a stylized depiction of a lizard, a zoomorph commonly represented in ancient Pueblo people's art: