A cat strolling casually along the top of the fence is often more than an excitable dog can resist. The sudden dash, barking and general commotion that follows can be startling for everyone involved, the cat included, even if no real harm is likely to come of it in most gardens.
Understanding what triggers the reaction helps in managing it. Many dogs are simply responding to fast movement rather than the cat itself, which means a similar reaction might appear with a bird, a falling leaf, or anything else that suddenly catches the eye while the dog is out in the garden.
Redirecting the dog's attention
Keeping a favourite toy or activity ready for these moments gives the dog something else to focus on the instant a cat appears. A quick game of fetch or a call back towards the house often works far better than trying to shout over the noise of an excited chase already underway.
Planting along the fence line, or adding a low screen where the cat tends to appear, can reduce how often the dog actually spots it in the first place. Out of sight quite often means out of mind, at least for the time it takes for the excitement to settle.
Building a habit of coming back on command, practised during calmer moments in the garden, pays off considerably when a real distraction does turn up. Most dogs improve steadily with a little regular practice, even if the sight of next door's cat never quite loses its appeal completely.
Over time, many households find that the cat itself grows a little more confident once it learns the dog rarely gets close enough to cause any real bother, and the whole routine becomes noticeably calmer for everyone involved.
A brief chat with the neighbours about the pattern of visits can also help both households understand what to expect, particularly if the cat has a favourite route along the fence at roughly the same time each day.