Who can one shot who?

[withheldforprivacy]

-Can a lion one shot a chimp?
-Can a bear one shot a lion?
-Can Dino Bird one shot a bear?
-Can Bear Thief (without his sword) one shot Dino Bird?

Also, give explanations.

 

[SSJ2]

I don't think any of those would be one shots, aside from Pterodactyl vs Bear. The rest are too close in power.