Definitely seperate bowls. All 4 dogs get their own food in their own bowl every night. Seperate feeding reduces the risk of food aggression, and i will not risk my dogs getting into fights over food.

Also alot of multi dog familys have dogs with different nutritional (Sp? thats not right) needs and dogs who eat more or less. In my case Elvis is a much smaller dog than Clover but he get about half a cup more food than Clover, his metabolism is a lot higer than hers and he burns off his food quicker.