@Silkylola
A WW is a Wild Wolf (basically any wolf that isn’t a progen, the two wolves created when you start the game, or a pup bred from two existing wolves). You can get them from hunting (as you’ve just done!) or campaign encounters. They are Generation 1 (G1, Gen1), so they have no parents or relatives, which means they are compatible to breed with every other wolf in the game when you acquire them. People typically value wild wolves over wolves that get bred, but that just depends on your play style honestly. I love my wild wolves bc I feel like they “chose” me, but when I’m buying wolves I personally am more interested in aesthetics than their lineage or lack thereof.
A double just refers to someone with two genes that have a perfectly matching color. Similarly, you can have a triple or quad, with three genes or four genes all having the same color. Typically, people don’t include eye color because it can be changed separately and (relatively) cheaply, but you can also see some people say “Eye Double” to mean two genes have matching colors but one of those is the eyes (so if top and Eyes are the same color but accent/base/under are others).
There’s nothing inherently amazing about doubles/triples/quads, but some people value it much more and will pay more money for it. Generally, this only applies to WWs, because it’s more rare for randomized wolves to have matching colors than it is for wolves you could just breed that way. Once again, though, I personally go for aesthetic and prefer a super cute wolf with no doubles over one that is a double but mediocre. So it’s really just up to personal preference whether you assign any significance to it or not 😊