A black labrador named Tokyo got more than she bargained for on a hike up Ben Nevis last weekend when she ingested discarded cannabis and promptly lost the use of her legs, drifting in and out of consciousness. Owner Christina Bluhme, a dog trainer from Esher, Surrey, was halfway up the 4,413ft (1,345-metre) peak when Tokyo began exhibiting symptoms. The Lochaber mountain rescue team stretchered the unconscious 25kg labrador down the mountain to a local vet. Bluhme described the experience as “one of the most frightening days I’ve ever experienced,” adding, “I genuinely thought I was going to lose her.” Fortunately, Tokyo made a full recovery the following day, with vets confirming the cause as cannabis left on the trail. Bluhme expressed gratitude to the rescue team and vets, and issued a reminder to fellow dog owners: “Please be aware that discarded drugs and other toxic substances can sometimes be found even in the most beautiful outdoor places.” The Lochaber mountain rescue team praised the vet team at Crown Vets in Fort William. According to Vets Now, dogs have more cannabinoid receptors in their brains than humans, making them more susceptible to marijuana's effects. Symptoms can appear within 30 to 90 minutes and include loss of balance, stumbling, inability to stand, dribbling urine, dilated pupils, and glassy eyes. This incident echoes a similar case in Somerset in 2024, where two dogs, Margot and Willow, became unwell after consuming cannabis-laced human waste in the Winscombe nature reserve.