Dogs and cats together
Many dogs can live peaceably with cats, often forming a close relationship where they sleep together or clean each other. However, this is not always the case. Not all dogs can or should live with cats, and similarly, not all cats should live with dogs. Some cats may be very nervous of dogs and even a calm dog may scare your cat so much that their welfare is compromised. Likewise, there are some dogs whose predatory drive is so strong they cannot safely be left with cats at all.
If your dog consistently shows signs of being over-excited around cats and can’t be calmed down, it may not be safe for them to be together. If your dog behaves like this around cats, we recommend keeping them separated at all times and contacting a qualified behaviourist for advice
https://www.dogstrust.org.uk/help-advice/dog-care/dogs-and-cats-living-together