An Irish family has said their pet dog is helping to protect their three-year-old daughter by warning them when she is about to have an epileptic seizure. The Lynch family, from County Clare, believe their Great Dane, Charlie, can sense changes in their child up to 20 minutes before she has a fit. Brianna Lynch has epilepsy since birth. Her family said Charlie will alert them by walking in circles around Brianna. He also gently pins her against a wall to stop her from falling during a fit. Brianna's condition [can] lead to traumatic seizures, some of which cause her to go into a trance-like state, while others cause violent convulsions during which she is at risk of falling and hitting her head. Brianna's mother, Arabella Scanlan, said Charlie is not a trained seizure alert dog" but was just a normal, family pet who appears to have developed some kind of special skill through his own instincts. They first noticed it some time ago when the huge Great Dane began to get agitated and walk in circles around Brianna. Minutes later the toddler had an epileptic fit. "Charlie will know about 15 to 20 minutes before she's going into seizure. He'll get ever so panicky and giddy, almost as if you'd think 'this stupid dog is going to knock her over'. But he has never once knocked her over. We kept an eye on this and, sure enough, I went into the yard one day and she (Brianna) was buckled over to the side, on top of him (Charlie). She was actually having a seizure. He stayed with her, he didn't move." Ms Scanlan said that since then, the dog rarely leaves Brianna's side and will gently pin her up against a wall or other surface if he senses she is about to fit. He will guard the child until help arrives.