You know the expression, "Like father, like son". A hint to this from a Jewish concept can be found in Rash"i on Breishit 25:19.)
Who was Calev's father? יפונה which means, "he would turn away from". Specifically, Calev's father would turn away from eating cookies, because he was satisfied with the mahn that they had daily, as well as the quail that they had at night. He couldn't fathom eating anything else, certainly not cookies - esp. computer cookies.
Calev was like his father, so the cookies were definitely not ראוי לאכילת כלב.
The only other spy this same halacha could apply to is סתור בן מיכאל of the tribe of Asher. סתר means "hidden", and we know that Chametz must be hidden on Pesach. So, only if you are an "Asherite", you would be forbidden to eat these cookies, because סתור didn't eat these on Pesach.