The dog food (and cat food) adverts were this morning and early afternoon. I hadn't seen them before and seem to now have stopped. The ads for other Now TV programmes and boxsets are still being shown, but at least back to normal.
The ads for other programmes aren't at the start of every episode, but perhaps 1 in 4 or 5. I tend to watch on demand for catch up of recent shows. As far as I recall I've seen the ads for other Now TV shows at the start for every channel I've watched, including Sky Atlantic, Sky One, Fox, SyFy, Comedy Central. I've seen the ads at all times of the day.