As a vegan, I too have struggled with the environmental and animal-welfare impact of feeding my two dogs a traditional meat-based diet. Instead I feed them an insect-based diet. This provides all the nutritional benefits of meat without me having to face the concomitant ethical minefield. It has the added benefit that the dogs love it.Diana ThorntonOxshott, Surrey All cod liver oil spoons should have a large hole in the centre (Letters, 11 May ).Brian CowenDarwen, Lancashire
Apparently, dogs can be trained to use a scratching post just like cats! Get the directions for how to build a giant dog nail file here.