Our other dog is Rex, a black lab / border collie mix that we got
from the Oregon Humane Society. Supposedly he didn't get along with other
dogs, but he plays great with Pippen (although a little rough and
hyper at times!). He's very friendly but hasn't learned yet when
not to jump. As you can see from one of the pictures below, he also
likes to chew on the walls.
In the picture below, Rex is vigorously barking at a moose behind the house...