I used to live in Colorado Springs, and one night I let my dogs outside to relieve themselves before bed. They charged out of the house like usual, but stopped dead in their tracks only a couple feet from the house. They whined, they paced, and in the end they wouldn't pee. I figured there was something bothering them, so let them back in. But the same thing happened the next day. By halfway through the day they would go outside, but cautiously, and all three of them wouldn't go further than the porch - which all of them started peeing on! They NEVER did that, their potty spot was along the back fence. One actually peed on my shoe she was so concerned about getting too far away from me.
Three days after the that behavior started, a teacher at an elementary school 1/2 mile from me reported seeing a mountain lion in the trees that ringed the playground. She was ignored. The next day a parent saw the same thing, and got a fuzzy cellphone pic of it. When that went public all nearby elementary schools started multi-parent patrols on the outsides of playground areas to protect the small children. The mountain lion was never seen again.
About a week later my dogs - all on the same day - stopped peeing on the porch and resumed normal activity in the backyard.
During this whole thing wildlife officials would swear up and down that mountain lions *never* went east of the interstate. (this school was a good 10 miles east of the interstate) Never. Therefore it could not have been a mountain lion that was seen. I'm glad the parents refused to listen, and took matters into their own hands to protect the children. Personally, I 100% believe it was a mountain lion. My dogs included a Samoyed and a German Shep mix - nothing smaller than a bear or mountain lion would have concerned them. Wildlife guys just don't admit that anything changes, despite all of these large animals being known for roaming miles away insearch of food and mates.