An urgent search is being carried out to find a teenagers support dog who has been missing in the Highlands for two weeks.
Louie, a two-year-old golden retriever, is trained to let 17-year-old Ellie Lynns family know when she is about to have an epileptic seizure.
But he went missing on the path to Steall Falls in Glen Nevis after slipping his lead.
Ellies mum, Louise Manson, 41, from Fort William, said the family have been leaving food and dirty clothes out on the route in the hope he will catch the scent.
They have also camped in the area and had barbecues. Groups of locals and visiting walkers have been searching for him and wildlife cameras are being installed to see if they can spot him.
The familys hopes were raised at the weekend when a tracker dog picked up his scent after first smelling Louies blanket.
Louise told BBC News: "The dog smelled some of Louies blanket and tracked him for a while - it must have been recent because the rain has been horrendous.
"It gives us a lot of hope that hes still alive. People have also been hearing barking."
She said that when Louie went missing it was raining and the path was very narrow.
"A family were passing us, the kids were upset, the rain was pouring and Louie slipped his lead," she said.
"We looked down and he was literally gone. We dont know what happened to him."
The family checked the river and scanned the area, going in different directions, but there was no sign of Louie.
"We went home, told our children, put a post on Facebook and before we knew it there were locals up here helping us search," Louise said.
"Louie is so friendly and bubbly. Hes like one of the kids. He just sits on your knee, cuddles into you when youre watching TV. If youre not well hes always resting his head on your chest - he doesnt leave your side.
"If Ellie is home alone and feeling insecure hes by her side. If shes building up to a seizure he can somehow sense it and alerts us so we know what were looking for and know if its going to develop.
"Hes pretty amazing."
Louise said it had been a real struggle for the family since he went missing.
"Its been really difficult," she said. "But the help has been amazing, phenomenal."
"Hes got to be somewhere. Ive heard of dogs appearing five years later, five months later.
"Hes a member of the family. He sits at the table with us when we have dinner. Hes definitely special."
She added: "Ellies lost without him."
Ellie said: "Hes really important because he helps me with my epilepsy. He doesnt really bark but he tries to make people notice somethings wrong and takes them to where I am. Then he comes and lies on my chest or stomach.
"Hes very friendly, happy and cuddly. He sits on your knee and everything. He doesnt really leave you alone.
"I miss him a lot. Its weird without him around the house."