Rattleskin Redoubt is it like a fight club thing?

Candle yipped joyfully and turned at once, gesturing for the girl to follow. She put her nose low and searched for scents of rats or mice, blowing sand around with periodic snorts below the surface to stir up the scent. Soon she found what she was looking for.

A bit of digging and a tiny squeal that ended abruptly produced a single rat. Candle took the tail delicately between her teeth and dangled the rodent in the air, showing the girl. Then she flung it to her and took off again, still heading in the direction of the ravine. Her nose was at the ground again, searching for more.