Turns out my inexperienced friend has decided to breed her guineapig. I'm angry at her for it and have already told her about risks etc etc. So she has two boars and two sows. Both bonded pairs. She took 1 boar out and placed it with a sow. He has been with her for a few days and rang me for information about if that's long enough. But I'm concerned that that boar cannot go back with his boar friend?