Your guinea pig runs to greet you at feeding time. Does that mean your company is enough? Another guinea pig can offer something different—but only if the two are a good match.
You picture a quiet rabbit in a hutch. Then you meet one that races across the room, rearranges its toys, and needs far more space and company than you expected.
Why can a female ferret become ill simply by staying in heat? The answer explains why reproductive care is different for males and females—and why surgery isn't the only option.