After grabbing the cats, Toz set them down outside the array of fire that Mindle arranged to keep the trees contained. It didn't work very well since the trees weren't afraid of fire. But since the trees weren't very quick or agile, it didn't matter. If the cats were outside their grasp, there was no way the trees would catch up.
However, neither Toz nor the cats had any intentions of retreating. There was no way they could let the tree that had taken Mindle's flames and threatened her life leave intact.
The cats had already regained their senses by the time Toz put them down. But it seemed like Toz wanted to deal with the trees on his own, so they let him. After being on the battlefield and fighting for so long, sitting back and watching someone else do the fighting was incredibly relaxing. And the cats relished in the break that Toz offered them.