Kamaloka is the spiritual state we enter shortly after death. It lasts about 30 years and is a state of purging the attachments to the material world, so that we can enter cleanly the Heavens proper (Devachan). It is also a place where we experience the effects of our actions that affected others, both good and bad. Including how we treated animals. Steiner says,
A vivisectionist has a particularly terrible life in Kamaloka. It is not for an anthroposophist to criticize what goes on in the world around him, …
Vivisection: in ancient times any doctor would have looked on this as the height of madness.
Upon The Face Of The Waters 
Thanks for sharing this, Gabe.
My husband and I had a friend over for dinner this evening and we discussed spaying/neutering our little furry friends, especially cats and dogs. So your post — which I almost didn’t read! — is all too timely and made me well up with tears.
I’ll be adding two more “wrongs” to my list of Natural Law violations.
Thanks Sharine. It saddens me to no end the callousness in the way many humans treat animals. I hadn’t really thought about neutering in the light of karma, although I still think that it is a humane act when dealing with strays.
I agree that there may be certain animals and circumstances which require humans to intervene in their ability to procreate.
Thanks Gabe for the reminder.
Essentially, everything matters!
Remember to be kind to yourself as well, as that is always the place to start!