Hi, I was wondering how long it normally takes for a dog to "pass" things, or even to digest. My dog (50 lb lab mix) *may* have swallowed a piece of gravel on Sunday evening. We were in the parking lot of an ice cream stand and I caught her with her mouth in the gravel (probably licking dripped ice cream). I don't know if she ate any gravel (made of pebbles, rocks and pieces of seashell). She acted normally yesterday, and "eliminated" normally, which for her is morning and evening. Today I'm worried because she didn't "go" before we left for work. I'm anxious to see what happens later today. What do you all think? Am I paranoid? Probably... How long does it take for them to get things through their system?