The people at Oxford have spent their time in some quacking mad study that claims that Dogs are a more intelligent animal than Cats. The news is surely set to cause a rift between Cat and Dog Owners world wide. Albeit no useful science has came out of the study.
The research summarizes that living in a social environment and group takes more cognitive processing than living an isolated solitary life which seems to suggest that animals which have larger brains tend to be more social.
Like in humans however, having more brains does not necessarily indicate usage of said brain. So whilst a Dog may indeed have a physically larger brain than cats, based on the behaviour of the dogs i have seen it seems highly unlikely they are using their brain capacity to any useful extent.