The use of dogs in personal and coletive safety is more widespread and effective than the use of cats. For example, dogs can be used for vigilance of a house and detecting drugs and diseases more reliably than cats.
Dogs come in a wider variety of breeds than cats do. This wider variety of shapes, sizes, and personalities means that you're more likely to find a dog that suits specific needs.
The predicate "better" has no single commonly accepted meaning by which this statement can be judged. We can only compile lists of incomparable pros and cons according to the diverse meanings of "better".
Cats and dogs both have their pros and cons. Although dogs are loving, they can also poop on your stuff, and even though cats are cute, they can also scratch up all your furniture. Therefore, there is no correct answer to this argument.
The cat is pretty much fine on it's own if you don't have time for it at some point. If you give your cat the lov it deserves, it will love you back. That's nature.
Since this argument is subjective, cats have superpowers! They use their whiskers to guage whether or not they can fit through a space, and are extremely sensitive to air movement that can be used to sense prey, foe or life in a mutilated victim. Some species run fast as f***! Also, hiding in boxes.
sources:
1)Cat physiology
2)The massive amount of videos available on YouTube to support that cats love boxes