I often find that dogs and cats get along just fine. Multiple cats, otoh, can take ages to get used to each other.
Many years ago, I brought home a retired racing greyhound, Humbug, to be a new member of our family. Three of my cats were fine with dogs, and I'd been assured Humbug was fine with cats, so my only remaining worry was my youngest cat, Wizard. As we entered, Wizard came running toward us, saw the dog, and did the full bottle-brush tail and arched back. (It would have made a good Halloween picture, as he was a black cat with medium long hair.) Then he realized that that long skinny thing we'd just brought in with us was a dog. "A dog! I love dogs," he all but said and proceeded to wind himself around the greyhound's paws, purring wildly, while poor Humbug pranced in place, clearly saying, "Omg, it's a cat. I'm terrified of cats."
They became good friends, although Wizard had a tendency to forget himself when he was grooming poor Humbug's ears, and nip.
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Many years ago, I brought home a retired racing greyhound, Humbug, to be a new member of our family. Three of my cats were fine with dogs, and I'd been assured Humbug was fine with cats, so my only remaining worry was my youngest cat, Wizard. As we entered, Wizard came running toward us, saw the dog, and did the full bottle-brush tail and arched back. (It would have made a good Halloween picture, as he was a black cat with medium long hair.) Then he realized that that long skinny thing we'd just brought in with us was a dog. "A dog! I love dogs," he all but said and proceeded to wind himself around the greyhound's paws, purring wildly, while poor Humbug pranced in place, clearly saying, "Omg, it's a cat. I'm terrified of cats."
They became good friends, although Wizard had a tendency to forget himself when he was grooming poor Humbug's ears, and nip.