I think it is a bullfrog since it has a distinct tympanum (the circular body part just behind and below the eye) and no dorsolateral folds. The diameter of a male’s tympanum is roughly twice that of their eye while a female’s is about the same size. The photograph suggests a tympanum diameter 1.5 times that of the eye, so I’m stumped. Bullfrogs are not native to British Columbia; they were brought here from eastern North America. You can read more about bullfrogs in British Columbia here.