Could someone please suggest what could be up with my dog.

**I do not want veterinary advice, just a general idea if this is normal or a cause for concern.**

Hello,

I have an 8 year old cocker spaniel. He is usually very healthy and energetic but today he is much more lethargic.

He is constantly licking his lips and spluttering. I think he vomited during the night as I found clear/ shiny liquid on the floor. He also has been eating lots of grass and plants.

It is unusually hot today where I am, I wonder if this has anything to do with it.