I have a 2 year old, female, spayed, English Springer Spaniel who is generally a love. One black lab she had been friends with was suddenly her enemy.
Corrections do nothing.
Pretzel loves to play but Patches won't play. She used to be very good with other dogs but we have just moved to a new state and from a house to an apartment. I have noticed she doesn't do well with other dogs now. The female is the dominant dog, being older and here first. Shep is still acting strangely toward him.