In Bulbapedia it says the anime has not shown any Pokemon actually breeding or creating the egg but has the anime shown a Pokemon that is a parent of an egg or another Pokemon?
P.S. Kangaskhan don't count
Yes, there is.
And although this might sound unbelievable, it actually Lugia.
Other than this, I'm pretty sure that there have been many referances in anime to parent and child.
Hope I helped!
I can't remember the exact episode numbers, but I know Arcanine has been shown as a parent at one point. Lugia was as well, which considering it can't breed in the games is interesting.