Since this is a gameplay question and not a question quite for the mods, it would go under Forums > Member Help for future ref, if I know my way around the forums at all, lmao. The community is pretty fast to answer questions there. :)

You can apply Warrior's Stones until the wolf is 2. There's no limit to how many you can apply as they age so theoretically you can keep a wolf forever. (Thank you to Eternity for confirming / checking my info with me, lol)

thanks!

*moved question*

What can you do if you can't find the places you haven't discovered yet in explore?

Are there any tricks?

Either just randomly go back and around and hope you find the places or you can buy an explorer map to see the exact area you can find the uncovered tiles.
I've personally done both of these things and while the map options is definitely easier I think I have personally explored around randomly more ^^'