If you have just moved, make sure you check everywhere for plants they may eat that are poisenous and rat poisen laid down. If you have had problems there, you may want to fill a water bottle up with part bleach and spray, killing anything that they prior owner may have had there. Very little bleach. We did that when our dog got parvo, also put dry bleach in the yard and wet it down with water afterwards.. Let me know what comes up tomarrow, see if he feels better, its good that he ate!