Author's note: This is from Duke's point of view
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"If a she-wolf can't go into heat unless her mate marks her, does that mean only mates can have children?", Luca asked Fynn, and I had a feeling that he was asking because of his and Zoe's situation.
Since they confirmed that Joe is not their father and that they had different mothers, Fynn's answer could be another assurance that Luca's and Zoe's fathers were two different people, before the DNA test is done.
Fynn thought for a second before responding, "Not necessarily. Once a she-wolf is marked by her mate, she will go into heat every six months and that will subside only after she has a pup. When a she-wolf is in heat, any guy can impregnate her. Mate is needed only to kick off her reproductive functions."