Sans can feel something latch onto the end of his tail, but he barely registers what. He almost doesn't hear Peridot howling, or pause long enough to consider what that means. Instead, he is focused on digging in teeth and barbs as deeply as he can, the jolt of Lambert grabbing onto the wall threatening to dislodge him.

With his tail failing to stick in and his grip slipping (wolf bodies are not actually meant for grappling like this) Sans pushes himself off of Lambert and goes aloft again - possibly accidentally taking Peridot with him. Of course, him disengaging from Lambert is not a show of peace or reluctance to fight... because only a moment later, he's opening his jaw and firing a massive blue laser at Lambert and the wall he's clinging to.