I don't think I have ever been annoyed this much about a single event in my life.
In a home full of adults and teenagers a seven year old was trusted unsupervised to move the family rabbit from his run ten feet to his hutch.
She failed, dropped him, panicked and chased him into a hedge.
Rather than mention this at the time she went in for her tea and brought it up in conversation as she was leaving for the night. It was getting dark and family decided to hack back weeds (nature corner where he was last seen), making more noise to spook the rabbit further away. I come home from work during a break, putting my job, possibility of working in the same field and life as I know it in jeopardy, to find them all sat on their arses watching crap tv. I searched the garden as long as I could and am now back at work thinking about foxes, cats, next doors pond and how badly the locals drive through the night.