I give my dogs hard boiled eggs or occasionally scramble them with coconut oil. I used to give Karloff one egg almost every day, but after we got Kyra I started giving Karloff 2/3 of an egg and Kyra the other 1/3 (I have to watch her weight).
Kyra, female GSD, whelped 6/15/10
Karloff, male sable GSD, whelped 6/30/08
Tuco, male black GSD, 7/17/97--8/13/08, RIP
Ada, female GSD mix, RIP