If you can find one, get him within smell range of an in-heat female, that should answer just about all questions regarding his interest in sex.
You used to be able to get Coyote Estrus but I haven't see it now in years and years. That's used to bait male coyotes for the purpose of killing them. Don't know if that still happens much or is even still a thing, but someone who lives where there are loads of coyotes could maybe answer that.
If you could obtain that, it would accomplish the same thing without the bitch in-heat. Alternately, I think breeders might still use K9 Estrus, but I'm not a breeder so I wouldn't know where to even begin.