Well, we began Downton Abbey with the 1912 sinking of the Titanic, remember? And the Earl already had Isis, who appears to be a purebred yellow Labrador Retriever. We are now at 1924, so Isis is at least 13 or 14 years old; old for a lab. Yes, I think that dog has to die.
But, having seen the whole series on my DVDs, I will say again that I think this was the very best season EVER!