Male guinea pigs

[Dollyx]

I am not going to adopt male guinea pigs any time soon, this question just came up as I was considering adopting two males within my city.

If male guinea pigs smell female guinea pigs, will they get aggressive?

 

[Piggies&buns]

If a boar pair are not used to sow pheromones then smelling them can cause issues with their bond.

It’s safest to keep a bonded boar pair well away from sows ideally the boar cage is in a different room. The alternative way to ensure they aren’t exposed to sow pheromones is to have your piggies in stacked cages - the girls cage at the bottom and the boar cage at the top. Always make sure you handle the boys first so you can’t risk transferring sow pheromones onto the boars.
It’s generally more of an issue if you have boars in a room first and then try to bring sows in - that will cause more of a reaction from the boars. As you’re not doing it that way then things may well be better but you would still want to be careful

 

[Pound Shilling & Pig]

I have 5 pairs of boars living in the piggy shed. They live in raised, stacked accommodation a few feet away from the girls, who live on the floor and have never had any problems with this causing aggression, with my current or previous piggies. From my experience they don't seem bothered by airborne scents but can become very excited very quickly by the tiniest bit of stray sow hay, fur or other debris, hence the need for them to be raised and a little distance away to prevent this from happening. They also must not be put anywhere where sows have been and left a residual scent, so will need to go out on a separate area of the lawn for grass time, be weighed before any sows if using the same tub and have lap time before any sows (or after change of clothing), etc.