He'll try anything that looks like food, that did NOT look like food, it looked like tracing paper. Instantly suspicious. "...Oh, hm."

Popp's examples seem a little too small, so Sephiroth looks around briefly for something to compare them to, extracting himself from the bush. Unseen, a little black and yellow garden snake takes the opportunity to wriggle frantically away through the grass.

There's not much to compare them to around, but after a long moment he points. At an oak tree, perhaps eighty feet tall. "They're about as thick as that tree is, and perhaps as long as it is tall? They can swallow chocobos whole, which are the size of the horses that were occasionally around Town."