I would far rather sheep escape than horses or cattle.
Sheep, not known for their intelligence, will go back to a filed they know or even back through their escape hole!
Cattle and horses will usually make for the neatest and best kept garden like magnets and trash it!
At the riding school I learned to ride at the horses and ponies grazed on steep hills known as downland. In the summer they worked hard most doing 4 hours a day carting holiday makers up over the downs and home again. It wasn't particularly hard on them but monotonous despite several different routes. All mainly walk and trot unless the people could ride.
We had several heavyweight cobs, they earned their keep during the summer when the tourists were about.
One Monday morning a few of us went to get in these heavyweights. They had been there on Sunday afternoon (they all had a Sunday off) but there was no sign of them. I finally walked along the track to where there were rails that let down - sure enough some one had let them down This meant that they had access to hundreds of acres of scrub land. I walked off looking for them but there was no sign. The others went back to the stables whilst I continued walking.
Not a sign of them.
The rides were taken where the horses might be but nothing!
Three days and not a sign of them. Rides had to be cancelled as there were not suitable weight carriers for a lot of the people.
It was Thursday when I was riding a just backed pony, out with another girl. We were still looking. Then we saw a pile of droppings near a water tank but no sign of the horses. It was hot and the flies were bad. We rode over what we call Big Down but not a further sign of them.
There was an old stone barn that had been renovated and although we had looked in there - it was full of hay, something made me dismount and look closer. Yo the side there was a 3 feet gap and behind the hay was a pen for keeping cattle in - there were the horses - out of the sun and flies and quite happy as they had hay and water and freedom to wander when it was cooler!
To get to this area they had to have gone through three gates which people must have left open and then someone else closed.
We went back to the stables, collected halters and rode some of the ponies up to collect the, - their holiday was over.