My 7 year old has always had a tendency to bilious vomiting, mostly in the early morning and mostly controlled by feeding a small meal at bedtime. He also vomits bile during the day if his meals are late. He is fed four times a day because of this.

There’s been more frequent vomiting of bile recently as he has been refusing his food - he is on a Royal Canin veterinary food to control formation of struvite crystals. The colour of the vomitus has changed from pale lemon to almost egg-yolk yellow. He has also been browsing the winter-flowering jasmine in the garden when he has not eaten his meal, and only then, and shortly afterwards brings up the leaves mixed with yellow foam. There is never blood in the vomit.

I will take him to see the vet next week about this and about his diet. I would like to know if anyone has experience of
1. frequent bilious vomiting
2. change of colour of “output”
3. eating of winter-flowering jasmine - I can’t find it in the lists of plant poisonous to dogs

He is fine in himself, not mopey or miserable, even just after an episode.

my late weimaraner did it all her life if went too long without eating.  colour used to change depending on what she had eaten last.  never found a fix aside from small snack and telling her to sit stay in a nice upright gravity assisting manner.

Thank you, that’s a comfort.

I had the occasional home-bred Basset who'd do this, but only in the early morning hours.  My current buy-in Basset also started this, until I started giving him a late evening very small meal of tinned Chappie which has stopped all that.    You might find using an easily digested food, something like fish and potato helps stop this - and feeding several small meals a day although he he needs a special diet re stones, that might not be possible?  After a bout of potential GDV (Bloat with torsion), although his stomach hadn't flipped, I have been feeding him what amounts to 2 main meals a day (fish and potato, or lately fish and rice.... just switched back to the former in the hope it clears his skin), and a small Chappie meal at lunchtime and last thing.  This was after my vet suggested I do this, but since he's had lunch, he's at me for lunch now

Voimiting bile is usually down to either an empty stomach, or food that irritates his digestive system.   Have you tried adding a wee bit of NATURAL Yogurt?

Thank you, MamaBas. I don’t want to move him from the special diet entirely without consulting the vet, although I have stopped using the Royal Canin dietary wet food and added a little Butchers Tripe.

At present he is fed breakfast and dinner of 50g RC diet kibble with 30g wet, plus 20-30g raw carrot for the crunch but usually now cut small for “tempting sprinkles”. At dinner he also has a small teaspoonful of natural goats yogurt (this was started a few years ago after reading your recommendation of it , and it stopped the “little and often” morning poos of increasing runniness).

He also has lunch and supper of 25g RC diet kibble, plus one small dog biscuit when he is in his bed for the night.

If he doesn’t eat his meal, I take it up and re-present it at the next mealtime.

   I'd forgotten I'd recommended GOATS yogurt, if available.   For those who react to anything to do with cows' milk, yes, for sure goats is better.