To a certain degree it'd depend on the dog and its personality, but being a dog owner is closer to being a parent than an owner. Dogs bond fiercely with their caregivers and rely heavily on being guided and educated by them. If you can imagine caretaking for a 6yo it's about the same levels of consideration and responsibility and dependency.

And I have owned cats before yes! The biggest difference between being a cat and dog owner ime is that cats are far more secure being independent and looking out for themselves to a certain degree. Dogs are far more dependent on the owner for their time and attention. For example, a cat can go to the bathroom (as it were) on their own and clean up after themselves while with dogs you basically have to take them outside to do their business.

Basically: with cats I found myself living a parallel life alongside them, a bit like with a roommate, but I have to center my whole world around a dog and be an active participant in caring for them. I never once had to think of hiring a babysitter to do an afternoon errand for a cat but I go out of my way to make sure my dog has a playdate with someone if I'm out of the house because separation anxiety takes over and they can panic.

(Note -- you CAN train separation anxiety out of your dog so they're more comfortable being alone and trusting that you'll be back eventually, but if you're like me where you're home most of the time and that's what they're used to it's pretty much impossible)

Dogs also demand a lot more daily bonding activities than cats do. Daily walks, daily play, that kind of thing. Dogs are extremely social animals and they need to connect with the world around them and need a VERY solid routine to be emotionally healthy. It's kind of why you generally see extroverts being more attracted to owning dogs and introverts to owning cats, because dogs are by far built to force you to go outside and interact with others but you can more easily be a homebody with a cat.