Updated On June 20th, 2016
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Answered By Jennifer Summerfield, DVM CPDT-KA 103
Veterinarian, Certified Dog Trainer
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Many dogs sleep in corners when they are anxious about something in their environment, such as during a thunderstorm or if there are fireworks going on outside. It makes them feel more secure. If this is more of a general behavior change with your dog, it may be related to age - some older dogs will have changes in their sleeping habits and sometimes in their overall sleep-wake cycle, similar to what sometimes happens in people with dementia or Alzheimer's disease.
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