That's ridiculous - to have to register a pet. I also didn't realize there were higher fees for intact vs non intact, that's crazy too.
Back in our fostering days, when we lived on acreage in the country, we had an average of 24 fosters at any time, in addition to our own 6. No restrictions or limitations. All were well cared for and properly vetted of course so there was never any concern about neglect, etc. In fact the neighbors would come over when we acquired new fosters to see what we got and it was such a lively, fun place to hang out. Miss those days. Geez I feel old.