Dogs running free on highways pose a challenge to authorities, and one in Wales proved so difficult to contain that officers decided they had no choice but to put the canine down.

Dogs running free on highways pose a challenge to authorities, and one in Wales proved so difficult to contain that officers decided they had no choice but to put the canine down.
The animal was running around on a highway early on Monday, and the North Wales Police were called to handle the situation. 
Catching the dog proved difficult, and when one officer did get close enough to g