"Brother!" Caseus howled as he quickly abandoned the fight from behind to come help Luca. Dilli then ran back to take his place while Nima turned off her light. Fillo then quickly pulled Hans inside his belly, with Brooke gasping when Nima did the same for her.
Actually, the dogs were really hesitant about doing this. Because their bellies might be a pouch for hiding and taking care of the wounded. However, if they took something inside their bellies, they would lose the ability to generate fire as it was coming from the pits of the bellies.
Unless the person inside could be killed—incinerated alive rather, the hellhounds would be compromising their most vicious attacks by swallowing rescues.
It's just that, they had no choice.