Two abandoned 16 day old pups. Been bottle feeding for 5 days (mom gone). They were doing fine until last night, they lost interest in bottle. Both have thrown up a little formula (a dime size quantity). One had a lot of brown "seedy" poop this morning. They are sleeping well & peeing regularly.
Should I take to vet, or just keep trying to feed? Could the formula be too cold? It's room temp.