Fergus, who is now eight years old, was struck down with Seasonal Canine Illness (SCI).
Owners Debbie and Dave Yates, who live in Coningsby, were very close to losing their treasured friend.
Luckily, Fergus received treatment in time and was saved.
To thank the animal charity, Animal Health Trust, for raising awareness of SCI, Fergus and his owners decided to take on the marathon trek.
The aim was to raise funds for the charity, which fights disease and injury in animals through treatment and research.
And Fergus successfully completed Wainwright’s Coast to Coast Walk – from St Bees on the Cumbria Coast to Robin Hoods Bay on the North Yorkshire Coast.
Together with Debbie and Dave, it took 18 days of solid walking through wind, rain and sun.
The challenge was completed in two halves, initially covering the first 82 miles and then the remaining 108 miles to the North Yorkshire Coast.
The team have so far raised over £1,000 for the Animal Health Trust and the sponsorship money is still being collected.
A great deal of training was required to make sure all of the ‘team’ were fit enough to complete the walk – especially Fergus.
Apparently, some dogs become too tired or develop sore paws during the walk but Fergus seemed to enjoy every minute of the adventure.
Debbie said: “The Coast to Coast Walk is something I’ve always wanted to do so I’m really pleased that we were able to complete the challenge, with Fergus in tow.
“We weren’t always blessed with the weather and it was incredibly hard-going at times but the views were amazing and it was worth all the hard work in the end.
“We’ve been blown away by people’s generosity so far and have exceeded our target for the Animal Health Trust.
“It’s thanks to their expertise that Fergus, and many other dogs, are surviving SCI.
“I’m sure increased awareness and knowing what to look out for has made a huge difference to so many dogs’ lives, including our Fergus and for that we’re really grateful.”
n The cause of SCI is not known but it can strike over the summer months and into early autumn and can make dogs incredibly sick and lethargic shortly after having been walked in woodland. With quick action, most dogs can pull through if they are seen by a vet in time.
n To donate towards Fergus’ adventure walk go to: www.virginmoneygiving.com/FergusTheDog