"Pet friendly" is not a category in Dubai property, it is a decision made building by building, and often by the owners association rather than by the developer or the landlord. That is why lists of pet friendly communities are unreliable: the community can be relaxed and your specific tower can say no.

Where the rule actually lives

The building or community rules, set by the owners association. This is the binding one, and it can change.
Your tenancy contract, if you are renting. A landlord can prohibit pets even where the building permits them.
Size and breed restrictions. Common, and frequently unwritten until you ask.

Get it in writing before you sign anything. A verbal assurance from an agent is worth nothing when the association sends a notice.

Which formats suit pets

Townhouses and villas are the straightforward answer. Your own front door, your own garden, no lift, no shared corridor. Communities built around them tend to be more relaxed by nature, and buying a townhouse in Dubai covers how the format compares on price.
Low rise apartments with ground floor access, ideally with a terrace.
High rise towers are the hardest. Lift journeys with a dog, no outdoor space of your own, and the associations that are strictest.

The practical things owners forget

Shade and surface temperature. For much of the year pavements are too hot for paws in the middle of the day. Communities with mature landscaping and shaded paths are genuinely different to live in with a dog.
Somewhere to actually walk. A park you can reach on foot matters more than the label on the community. Dubai Hills Estate and The Valley are both built around genuine green space rather than a landscaped strip.
Vet access within a sensible drive.
Registration. Dogs need registering with the municipality, and that is separate from anything the building requires.

If you are moving with a pet, tell us at the start and we will confirm the building rules in writing before you view. It rules out a surprising number of otherwise suitable places. See what is available to rent or to buy.