Try these two groups, they are among the most active and has huge number of members/fans.

https://www.facebook.com/KakimotongFanClub?fref=ts
https://www.facebook.com/ktaj0311?fref=ts

SPCA, don't put so much hope. They are too 'institutionalized' if you get what I mean. Plus lack of volunteers. Community groups are better and can react faster in my opinion.

All the best. I will try and think too if there's better idea.

You've done your part, TS. Hope all will be well later.