What made you want to look up xenial? Please tell us where you read or heard it (including the quote, if possible).
Black dog is an oft-used phrase to mean depression. Here's a link that attributes the phrase to Winston Churchill, but I suspect he didn't invent it. I like the way they described it though: Black Dog was Churchill's name for his depression, and as is true with all metaphors, it speaks volumes.
Feeding your dog with black beans can also cause some oral problems in your dog. It is recommended that oral hygiene should be maintained if black beans are part of your dogâs diet. Post by: Adrian Sau. Beans, Black, Black Beans, can dogs eat, dogs eat, Food, what can dogs eat. Can Dogs Eat Garlic Can Dogs Eat Fruit.