I usually don't kill anything I don't need or doesn't threaten me. Lately I've been tiger stalking...I like watching em walk around, stretch, and hunt. Until they notice me. --- An amazing business opportunity for anyone! Work from home, no experience, background checks, no boss! People who want something more, contact me asap!
I usually don't kill the animals I set loose on pirates when taking down Outposts... I just nod and say "that'll do bear"... --- That right there was either a half-hearted attempt to be funny, or a wholehearted attempt to be a moron...
I didnt even know there were rays in the game and Im pretty far in. Cool to know.
On topic: The ONLY animal I dont purposely kill are tortoises. However, unless Im being attacked I dont kill animals I dont need for crafting. --- He who needs a pat on the back makes every man his judge
There are 42 handbook entries for animals and you have to kill an animal to unlock its entry, so I killed each animal at least one. Other than that, killing animals that are harmless and doesn't contribute to your equipment, is quite pointless.