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Processionary caterpillars on the tarmac
© maxthehussky - Instagram

Be very careful with this brown line: An urgent warning to dog owners everywhere

By Greta Inglis Dog Behaviourist | Animal Behaviourist

Published on the

A post shared by instagram profile @maxthehusky has been viewed over 120,000 times, after they warned dog owners about what this mysterious line means. 

The change in season brings with it important considerations for our canine companions, as @maxthehusky reminded viewers recently. 

Particularly when it comes to the Pine Processionary, also known as processionary caterpillars. 

Deadly for dogs

"Thankfully my Huskies and I spotted the caterpillars on our walk", explains the dog lover on Instagram. "After all the frights we've had with these, please be careful". 

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These caterpillars have urticating hairs, that can be dangerous for dogs, cats and humans. 

The hairs contain a protein called thaumetopein, which can cause serious allergic reactions. In very severe cases, it can even cause death. 

What to look out for 

Processionary caterpillars usually live in areas with pine trees, crossing woodland paths to get to the trees. 

Being the curious creatures they are, the risk is that dogs may try to investigate the line of caterpillars, meaning that they come into contact with their face or mouth. 

Sniffing a caterpillar may result in irritation in some cases, while licking or ingesting a caterpillar can cause necrosis of the tongue.

If you suspect your dog may have come into contact with a processionary caterpillar, and you notice signs of swelling, irritation, salivation, loss of appetite or excessive thirst, you will need to contact your veterinarian immediately. 

On walks, keep an eye out for these furry brown lines, moving your dog away as soon as you spot one. 

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