This wee light has been a life saver for my little dog Rosie. She started having panic attacks in the night and couldn't settle and stay asleep. I couldn't figure out what the reason was so I gave her massages, used homeopathy which worked for one night then she reverted to panic attacks and both she and I were exhausted through lack of sleep. I thought she might be losing her sight so I took her to the vet who confirmed that she was indeed losing her sight and suggested leaving a night light on. As there is no power socket on her side of the bed so the plug in one wasn't the best option I phoned Daniel and he suggested the Twilight book light so I purchased a red one. It worked the very first night which was incredible so I bought a second one so I could have one charged and one in case the charge ran out. On the odd occasion I have let the charge run out Rosie wakes me up with a pat or three to wake me up and I switch to the second light. She is under the care of the animal opthalmologist as her eyes have worsened and he is recommending this to his other animal patients who have failing eye sight and night time disturbances. If your dog is having similar problems I wouldn't hesitate in purchasing one or two, just try them. It's a game changer. Of course you also need to see your vet.