behaivor problems

Hi everyone, recently I got 2 new guinea pigs. They are 1 month old boys. I put them together with other 7 month old boys. I got two problems recently. First problem is that one of the big one is licking the small one ass, and likely eating his poops. But I think he licks toooooo much, like...

Greetings! I am new to this forum so please forgive me for any mistakes with my posts:) I have three male guinea pigs; Fred, Junior, and Nubs(he is missing a foot hence the name). Recently, Nubs has been getting himself into some fights with my other boys, resulting in bloody wounds. I took my...