It is the thank you that is not said with words for it appears the being can’t speak and in some cases you wouldn’t understand anyway. Sometimes it’s more wet then you like but you definitely can feel their expression of gratitude. Other times it’s just looking at another part of their body and noticing new movements (this is still the four legged type….I think). Yet for others it’s just an expression on their face that let’s you know the words are meant to be said. Finally for others it is the reciprocal actions that come at a later date when you truly believe they’ve forget. Thank you hard for some to say but easy for others to do.