The Beardie definitely seems like he is defending himself, more than playing with the Corgi. The Beardie is twice the size of the Corgi, so he can hold his own - when he has had too much, he will bark and growl (he was pretty much non-vocal before the Corgi arrived). The Beardie can also out-run the Corgi so there is a lot of chasing around the yard going on. My neighbors also work part-time, so intervention is not consistent. Thanks again for all the great info - this forum is soooo helpful!