Silvertip Mountain Play is the highest form of research

Ezekiel said eating others wasn't nice, and confusion took over Adeline's expression. But, Mommy was going to... she said softly. She had looked up to her mother in the short amount of time that she knew her, and she didn't think Mommy would do something she wasn't supposed to, or tell her children to do it, too. She would be sad if Uncle Steady passed, but she didn't think he'd chastise her for eating his body afterwards.

When her Uncle had told her what they did to her mother, Adeline had come to the conclusion that eating others when they passed was just what they did. So, she assumed fighting was for killing, and killing was for eating, be it deer or wolf.