Alfie is a devil for eating Acorns too
Unfortunately they do make him sick & occasionally have an upset tum.
This usually happens the day after he has eaten them.
At long last though i have found a way to stop him eating them....he carries a hard rubber ball now & because this is more important to him than the acorns it works
I hope your doglets are o.k.
i would def. keep watch incase of any reaction though.