Penny was the one who cut the walk short today, when she sat down and indicated she was ready to head home.
She had gone out with one of her other humans, while I was at church, praying for the people (and animals) affected by these fires. Not just praying, of course - there was a collection and a chance to talk with people whose families have suffered, and to discuss long-term ways the local charity can help, when the first crisis eases.
It's warm, but Penny can usually walk longer than she did today. Probably the smoke in the air affected her. Here's a picture of the usual view over Darebin Parklands compared to today's view: