thank you all so much such good advice to help us out. i will do a big check in the yard for weird plants and also pick up their poop everywhere to be safe that we eliminate the bad batches
i will have to get a new bowl for each kiddo. we used to bowl feed but it's eaten so fast all at once. sadie even on the floor still had full undigested kibbles when she threw up. which tells me she's not chewing and it's hard to digest whole kibbles. more cleanup and redo is ahead of me. so far sadie hasn't thrown up again so i think hers was a fluke deal after all and bent. seems all better so far. pray and cross fingers that this was just a little bug.