your dogs are jealous of the attention given elsewhere so you need to start practising nilif immediately to show them their place in the pack AND to protect your cats.

It is a dogs prey instinct that makes them chase cats AND they will maul them to death, but that would be your fault. They are doing what comes natural and in their eyes, the cats are interfering in their territory.

Glacier is right, keep them leashed and get them altared, asap.