It's just a veterinary diet that the intestines "like" better than other foods. Chicken and rice would do something similar, but that can only be fed for a couple weeks without balancing it.
Also I forgot to ask. Are you sure she is heaving when this happens or does she just open her mouth and out it comes?
__________________ Crystal  , Ellie May (RIP)  , Rylee Finnegan  , and Gracie Boo🐶 |