[Skrimir]

Thats it, i know thunder wolves cavalry gives reroll checks to fenrisian wolves at max 12'', and i suppose that canis give it aswell as he is mounted in one of em.... but not sure at all, what u say?

 

[SHarrington]

"Thunderwolf Calvary" is a specific unit that has the Wolfkin ability that allows rerolls.
Canis is not a "Thunderwolf Calvary" even if he is mounted on a thunderwolf. His unit name is "Canis Wolfborn".

Instead of Wolfkin he has a rule called Lord of the Wolfkin that allows local wolves to use his leadership.

Again, no, Canis does not enable re-rolls.