Strange yellow bile 'dribbles' and vomit with solid substance

[tarapage]

Hi,

My Bichon Shih Tzu is 4 years old, seems to be healthy. He just had his shots and check up all was well.

I've been seeing for a while 'dribble marks' around on my carpets. I have 3 kids under 4 so I wondered if one of them was having slight accidents making it to the bathroom, never thought much of it.

Today I found 2 big patches of bright yellow BILE vomit and shortly from it was the dribble marks... Now I think that it is my dog, and I think that it is bile dribbles, not urine. He also had a chunk of solid beside the vomit spot, I smelt it and it smelled like absolutely nothing. It was the size of a large grape, but was more oblong. It had a smooth texture and was soft enough, I could squeeze it with a kleenex. It almost felt like squeezing a saturated peice of soap...

Does anyone have any idea of what could be going on with him? What would the dribble marks be and what could the solid thing be.... Other strange thing is that I never once heard him vomit (although, I'm not always on the same floor of the house as him).

Thanks

Tara