Not Sure If My Boys Are Fighting?

[PatchandSilky]

I have 2 boars, nearly 2 years old. They live outside and are generally happy boys, they have dominance issues but are also very close and sometime snuggle etc.

Anyway recently I've noticed Patch is seriously mounting Silky..they've chased each other around lots but this is full on, on his back. I haven't seen Silky retaliate but today I've seen Silky has this bald patch on his nose. Do you think they've been fighting? If anything I'd have expected Patch to have been hurt but he looks fine. Any ideas?

 

[Wiebke]

It looks rather like the beginnings of a fungal infection to me! Please have him seen by a vet.
https://www.theguineapigforum.co.uk/threads/ringworm-hygiene-and-pictures.115402/
http://www.guinealynx.info/fungus.html

 

[PatchandSilky]

Oh really? I've booked him in, thank you.