Cats have 300 million neurons, whereas dogs have about 160 million. In fact, cats have more nerve cells in the visual areas of their brain , a part of cerebral cortex, than humans and most other , The proportion of UK adults owning a cat is lower than the proportion owning a dog despite similar population sizes due to a higher number of cats per cat owner than dogs per dog owner. 39 % of cat owners own more than one cat, whilst only 2 4 % of dog owners own more than one dog., These must be cleaned daily; with just two cats, there’s already a lot to scoop and sweep. Urination problems are almost a guarantee with more than a few cats, especially because felines often refuse to use dirty litter boxes. Cats from different social groups should eat and eliminate in different areas., The RSPCA said last year more than 7,500 abandoned cats were reported to the charity and more than 1,500 so far this year. Microchipping can be done by a vet or local rescue and rehoming centre , US dogs and cats snarf down more than 200 petajoules (a unit that measures the energy content of food) worth of food per year — roughly the same as the human population of France, according to Gregory Okin, a researcher at UCLA’s Institute of the Environment and Sustainability. “We’re talking about animals whose consumption is on the , .