I came home a couple days ago from vacation and my dogs were staying at my dad's and we were having a pet sitter come in to watch them. They did fine but I've noticed my dogs itching a lot more than usual. I figured they got fleas probably from dad's indoor/outdoor cat. Finally found some flea dirt on them both and so I put some topical flea stuff on them both and Mia is acting like I killed her. She's been sulking and hiding most the day and for the first couple hours after putting it on her, she was pacing and just couldn't settle at all. She'd lie down then get up, then go in the kennel and dig. Then jump on the couch. Jump off the couch. Do laps around the room. Then she finally just hid under the coffee table (which the bottom is only a couple inches off the ground, she shoved herself back there). Her tail has been tucked between her legs all afternoon. I've only had to put topical flea stuff on her a couple times and she always reacts this way, like you did the most awful thing to her. She never gets sick or anything, but she mopes... Has anyone ever had a dog with this kind of reaction? It worries me and I hate having to put anything on them, but I didn't know what else to do since they already had fleas. Summer didn't react at all to it.