By Ryan Fahey A tiny dog suffered “wobbly legs” before passing away when he was poisoned by a mystery substance in a park. Merseyside Police cordoned off a park in Belle Vale, Liverpool on Monday, after receiving reports of four dogs being taken ill. At around 2pm, police were called by a vet who had admitted a number of sick dogs that had ingested an “unknown substance”. Later it was confirmed that two of the dogs had passed away, while a third was seriously unwell. A fourth dog is still having treatment at a local vets. One of the dogs that died was a two-year-old border terrier called Teddy…