I have two male littermates and read about all the same things you mentioned. We did not separate them, we walked them together, feed them together. They are in separate crates when feeding but only because they would eat the others food. They do go to the vet separately on occasion. I have...
My boy Winston does this fairly often. We call it “playing the banjo”. His brother doesn’t do it at all - go figure.
Sent from my iPhone using Tapatalk