I think they should be.
At this stage, I don't think we should harass people too much over the according-to-Hoyle definition of a "pet." Definitions will vary by culture, and frankly I don't see this site being overrun by chicken questions.
Generally speaking, I think it's okay to keep it simply stated: "This site welcomes questions by individuals generally seeking to provide personal care of a domestic animal." That's in contrast to, say, industrial methods for rearing of animals for agricultural use, or zoological veterinary issues, etc.
Yes, there will always be a middle ground where someone raises a few chickens for eggs, or a calf becomes a pet, or a working horse gets ridden on the weekends — but in general, I think if we take a lighter approach to moderation of these questions, you'll know when the quasi-industrial questions are simply outside the expertise we've gathered here. Until then, just enjoy.