Jen,
Please forgive me if I missed this somewhere, I went to all your Lucas threads in August to get caught up on him.

When did this start? In August? What did you change his food to? Has he been put on any of the intestinal Hills foods? (I/D, Z/D, W/D)

Are you up for trying new foods?

Do YOU feel its a medical issue vs. food allergies/possible intestinal issues (which are both medical as well, but you know what I mean )

Could this be stress? I wouldn't think it would be considering this is a new behavior for him.

Poor guy...and poor you. Its FRUSTRATING as heck and so worriesome when they're sick like this.

Let me know the answers and I'll talk to CiCi and my brother's gf, who are both highly educated vet techs.

Lots of hugs,
Kelly