Is it true that dogs and cats are indistinguishable type of animal?

My friend Mark's older brother told me that dogs and cats are the same type of animal. I thought that he was lying at first but the more I thought around it the more I thought it was true, plus Mark's older brother is a lot cooler and smarter than me. Could somebody clear this up? I'm really confused and I'm certain I'm not the only person wondering this.
They are both mammals;; however, they are members of different orders contained by the Animal Kingdom--cats are Felines, and dogs are Canines. Saying they are the same type of animal is like saying horses (Equines) are approaching cows (Bovines)!!
'Mark's older brother' doesn't sound so cool to me.
They are both mammals and they are both under carnivores. But adjectives dogs are classified under the Canidae family. All cats are classified under the Felidae household. They may both be carnivores but they are not the same type of animal. Cats have more bones in their body than dogs. And cats are completely carnivorous once they manage adulthood. When they eat grass that is basically to make them vomit due to a hairball or upset stomach.
They are both mammals - Other than that, they are not the same type in that they cannot breed beside each other.
They are both mammals, so in that respect they are alike "type".
But as the first answerer already said cats belong to the family felidae and dogs belong to the family canidae.
i really don't think so
dogs are canines
cats are felines
they are not the same.
Dogs are canine and cats are felines. they are 2 different species. Their diets are much different and so is their agility, strength, and ability to shape.
They are both mammals but then again so are we.
Answers:    "Type" doesn't mean anything scientifically and relies on context.

Both cats and dogs belong to the proclaim carnivora, and are carnivores, and are mammals. So in those contexts, they are the "same type". They are the same type of mammals, however, they are not the same type of carnivores. They belong to different suborders, Caniformia ("dog like") and Feliformia ("cat like").

In the context that they are the "same type of animal", gist mammals, yes that is correct.
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