Foster can't argue with accusations like those, though he isn't lying--

"I'm all that and worse," Foster informs her with enthusiasm. "But I'm not lying." He's so matter-of-fact that Yellowfang might be forgiven for forgetting that he still has his paws in her bloody sandpit, hooked claws all up in her morbid little stash of prizes.

"But I don't blame you for not believing me! But you can trust me this time. I have no reason to lie to you, which is the best reason to believe me... what I said is true. I wouldn't have said it if it wasn't!"