Dogs have been man's best friend for centuries, their loyalty and companionship cherished by pet owners worldwide. Yet, there's a lesser-known side to this bond that has many pet parents scratching their heads: why do dogs sometimes seem to fear or dread...

---In a cozy suburban home, nestled among the laughter of children and the rustle of morning newspapers, lived a mischievous dog named Max. Max was a golden retriever with a heart as big as his bark. He loved to chase his tail, leap into piles of leaves,...