The RSPCA is reminding dog owners of the importance of keeping their pets under control to avoid devastating attacks on livestock.

As summer approaches, dog owners and walkers are expected to descend on the countryside, but it's likely they will meet grazing livestock along the way.

RSPCA inspector Tony Woodley, who is based in Sussex, said: "Whilst the vast majority of people take care as a matter of course sadly accidents can happen and even the most docile and obedient dogs can get distracted and excited by grazing animals.

“You may think that if your dog momentarily chases a flock of sheep and comes back relatively quickly that there would be no harm done, but even if there are no visible injuries, actually it could be causing the animals a lot of worry and anxiety, which can be really harmful to their health.

"Ewes have been known to abort unborn lambs whilst under stress which is just tragic.

"Dog owners should also remember that it is completely lawful for farmers to shoot a dog to protect their livestock - which no one wants to happen.

"Owners could also be prosecuted by police if their dog is caught worrying livestock.

“There is a very simple way to stop any of this happening though – keep your dog on a lead around livestock.

“If dog owners can spread the word about being responsible around livestock that will really help too.”