So I have a 4/5 month old GSD and a 6 year old pug.
When we first got the GSD he was 9 weeks old, and he and my pug played together happily. But now the GSD is older and much bigger! He still tries to play with the pug, but the pug doesn't want it anymore (assuming because the GSD is twice is his size now).
Anywho, the GSD will chew on my pugs legs/tail/neck, which leads the pug to run away. The GSD then chases the pug and continues the chewing. After 15 seconds or so of this the pug starts to snap and growl at the GSD. The GSD will back off for a few seconds and then go right back to chewing at him while making playful noises, but I end up stepping in and pulling the GSD away and give him something else to do.
But this is starting to become a pain in the butt because everytime the pug jumps off the couch or runs around the GSD starts chasing and chewing on him, he even likes to stand over/trample the pug and sometimes put his massive mouth around the back of the pugs neck.
The GSD is an unneutered male and the pug is a neutered male. It seems like the behavior is standard puppy behavior, but I'm not sure. Some things I have read said to let the older dog snap at him to put the younger dog in his place, but when my pug tries to do this the GSD thinks he is playing (probably cause the pug is tiny).
Long story short:
GSD chews on pug; after a while pug gets mad and snaps at GSD; GSD thinks pug is playing and continues to trample pug into the dust
what should I do?