We've stayed at some great places with our boy Diesel. We now seem to plan out holidays around where we can go with him - and it's taken us to some fantastic places we probably wouldn't have normally visited.
Skenes Creek Caravan Park
Dog friendly - dogs must be restrained on a lead. Great beach, great walks close by, Apollo Bay with Fish and Chips, the Ottways next door - it's great.
The Lakes Beachfront Holiday Retreat - Lake Tyres - Lakes Entrance
It's a little further to drive from Melbourne, but it's WELL worth it! The beaches are clean and beautiful. The wildlife fantastic (Diesel met his first Echidna!) and the Fish and Chips JUST as good as at Apollo Bay... maybe even a little better!