We've had lots of people asking about Tsar, so I'll post a little about his condition.
He seems pretty clear headed now and observant. He watches birds and squirrels and would like to chase them, but doesn't have the energy. He does take part in group activities with the pack. Most afternoons, weather permitting, I take him and Morgan into the back yard with the other dogs and he either wanders around sniffing or sits on the hill watching the others play. Occasionally he'll chase one of the girls a little. He does seem to tire easily.