cats eating puppy food

I can;t keep my cats out of my puppy's food. (I can keep the puppy away from the cat food, as he can;t jump over the gate as the cats can!)

Both kinds of food have chicken and chicken by products as the first 2 ingredients, in fact the labels are very similar.  The cat food has 34% crude protein and 21 % crude fat compared to the puppy food with 26 % protein and 16 % fat. Should I be concerned the cats are not getting enough nutrients?  They also get a little treat of 1/8 can of cat food (5 oz can) most days.

Oh, I thought I could watch the puppy eat then remove his food, but he's a snacker; he likes to nibble a little all day, rather than eat a meal twice a day.  I don;t want to take his food from him because of the cats and leave him without food when he wants it.

Any ideas?

[Savas]

You could switch to a brand like "Wysong". They make a feline/canine diet specially designed for those with both cat and dogs. Any of the Wysong canine/feline foods would be fine. Otherwise it isn't the best thing to feed a cat dog food in the long run.

I'd also suggest feeding your cat more wet food. Cats get 90% of their hydration from their food, and dry has an almost non existent water content.

I know, I know, it LOOKS like your cat drinks a lot of water from the bowl, everyone says this. But in reality, it isn't enough. Your cat will be low level dehydrated  if fed mostly dry food, and over the years there will be a greatly increased likelihood that kitty will develop one of the many digestive/urinary issues that come with this state.