Intelligent animals both, crows(ravens?) and wolves have been known to play together in the wild and it has been observed that crows(Ravens?) will sometimes alert wolves to potential prey in order that they might share in the food it would provide.
Photo by Maxime Riendeau an amazing wolf on attack! Such an amazing picture~~~Would not want her snarling at me like this, but this is a beautiful wolf! And she's not "on attack"! She's giving a warning!