Synonym for 'humane'

I couldn’t see any existing thread for such things, but would anybody be able to tell me a good ‘pony’ version, or synonym of, ‘humane’? As in, “A really humane treatment.” I couldn’t find anything working online…

I don’t know, I’ve never seen someone do one. Best I can think of is to just use ‘Equine.’

Yes, but unfortunately, it doesn’t really seem to work in context, and I can’t find a good synonym for it either…

how about ethical?

Unfortunately, doesn’t work in context. None of the words I found seem to do.  
Maybe I will stay with humane…

Horsy?
 
Equus? Steedy? Caballus?
 
Harmonious?
 
Ponish?Pony-ish? Pony-like?
 
I think they would use pony-like, or a similar word. If you’re pony-like, then obviously you are cheerful, helpful, friendly, everything that a pony is and what a pony should be.  
They may even use it for things like, cool or nice, like, “That’s a very pony-ish decoration.” Kinda how you’d say “Smurfy”. Not that the word forms are anything similar.
 
There are probably some uses that can not be matched. For example, you may say “humane treatment” not in the sense of “the best possible treatment2 but as in “the bare minimum you should always expect”. And I don’t think they1d say that, they’d use words like, say, “merciful”. Acting like a proper pony is a different or higher standard than acting like a proper human.
 
Just my two cents.

Yes, I meant the second ‘merciful’ usage. The problem with ponyfying the word is that I don’t think people would be able to easily figure out what I mean. Merciful sounds like the best option I have came across, actually. Might use it… but I am still leaning towards ‘humane’.  
Thanks for the help!

@Vree  
I actually used your suggestion, thanks!  
(Story spoilers, if you care about those)  
https://derpibooru.org/722815