Invisible fences are an increasingly popular option for dog owners. While it is not for everyone, it tends to offer more space for dogs to roam, without the hassle and cost of having a physical fence.

The kid’s face scrunched in perplexity. He almost looked up from his screen. “How did you do your homework? Where could you scroll for answers?” “Not scroll. Stroll,” I said. “I strolled into the ...