I see that You really want Lona to be fucked by doggo xD I'm sorry but pheromones works for same specie members only :D
Maybe it works for Bobo but well... Bobo is great pig and half-human right?... or It's more like Lona looks more like a pig? :D
Only reason I would see for Lona having sex with animals would be if she uses her Succubus Powers, she can get sucking skill why not "teasing" skill? While using skill Lona is "tempting" all NPCs around ( including none human NPCs ) and if Sexy high enough Tease Skill is success and all creatures will rather mate than attack.
On top of that we could have extra dialogue option during encounter "Succubus Tease" that would allow Lona to escape encounter if sexy high enough, dialogue would show only if Lona have special perk bought and sexy enough.