We have recently bought a black labrador and he is now 10 weeks old. He has a lovely temperament, but in the last few nights he has developed a habit of eating his own faeces during the night and then vomiting it back up.

Can anyone offer an explanation to why he does this, or any advice on how to prevent him doing it further? Thanks in advance.

I don't think there is an answer to your question as to "why?". However, there are products on the market such as Forbid and Deter that will make it less appetizing to them - if you can imagine that! You just mix it in their food. I remember someone suggesting a little Pineapple juice in their food can do the same.