I have been extremely lucky in that I have never had a "one dog" or "one cat" household. When new kittens are around they just think dogs are part of our pack - and whatever dogs are around just think "well, there's another silly dog wannabe". Same with a new puppy. They come into a house with multi-critters and it's their place to try to fit in. My first border collie puppy tried to herd the cats ~ they taught the puppy very quickly that cats don't "do" being herded Thank you powers that be.
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