I haven’t asserted that.
I think there may be the perception of true affiliation because of employees to go from nonprofit to nonprofit.
For example, a person interested in animal rights careers might start out at PETA, then look for a job at HSUS or vice versa.
I worked in environmental nonprofits - and this was pretty common. Actually - it was pretty common for fundraisers to go from nonprofit to nonprofit as well - they weren’t usually so focused on staying within a particular type of nonprofit.
So perhaps there is the perception of affiliation because so many PETA employees have gone on to better paying and higher profile careers at HSUS.
That’s just a guess based on my own experience in philanthropy. It’s also common for nonprofits that share common interests to work together on certain projects, share information, have board members in common, have high dollar donors in common - so in that sense there may be an “affiliation” but an informal one. The big nonprofits become a bit homogenized - employees go back and forth - there is a lot of overlap in mission, donors, and interest. They’ll even strategize on high profile issues.
Hope that helps. I know that PETA and PCRM are truly connected - but I’d hesitate to say that PETA and HSUS have any formal affiliation. Of course- since HSUS is merging with so many other animal rights groups - perhaps PETA will one day become part of HSUS. Anything is possible.
edited to add - HSUS puts out a lot of books because they make money on them. It doesn’t matter if they want eventing or hunting banned or not - because if they can make money on selling a book on horse care - they’ll do it. It’s just a good business decision.