What was the dawn wolf?

It was late in evolutionary history (the Paleocene period- which was 65/55 million years ago) when the Dawn Wolf (Similar to that of a enlogated fox) appeared. It could climb trees, and was POSSIBLY releated to the feline species. They originated from North America, and later spread to Asia and South America. (It is also said that they orginated from Siberia and Alaska too) and became what they are today, which is the now common Grey Wolf.