That's a pretty interesting statement for a host of reasons, but when I saw that, it struck me that that's awful close to another households with animals ratio. But I didn't know the number off the top of my head (just a feeling, that it was really close to that sixty percent). Wikipedia to the rescue:
"Around 63 percent of all U.S. households (71.1 million) have pets, and more than half of these households have more than one animal." A very superficial attempt to track the source on that failed, and honestly? Same number to the single significant digit, which made me a little nervous. I did a little looking around, and sure enough, there's a trade association conducting a regular survey:
According to which:
"According to the 2009/2010 National Pet Owners Survey, 62% of U.S. households own a pet, which equates to 71.4 millions homes"
I can't speak to the details on the survey, because the trade association is only willing to share with non-member if they're willing to cough up $1600+ for the privilege. No thank you.
I'm not prepared to speculate what it all means, but that is an interesting coincidence.