Laura McKirdy, a vet at Dalston-based Paragon Veterinary Group in Carlisle had to put down a dog which had chewed on its owner's cigarette device.
She said the dog she put down - which was a cross breed - showed signs of the effects of a nicotine overdose.
It had poor co-ordination and was sensitive to light, sound and touch.
She warned owners to treat their e-cigarettes in the same way as they would medicines and keep them out of reach of dogs or anything else that might accidentally eat them.
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The population of the bird in the south of Scotland has fallen dramatically in the past decade, due to overgrazing and habitat loss.
Vigils have been held in the region to mark the 100th anniversary of the battle of the Somme.
Vigils will take place across the region tonight to remember those who fought in the Battle of the Somme 100 years ago.