Go to the below page on the districtgov.org website and find the community you are looking to purchase in. This will give you all the deed restrictions for that subdivision. Look in the Use Restrictions (normally Article 5) for the pet restrictions. Anything else anyone - realtor, neighbor, etc. tries to tell you is a restriction is wrong.
I've attached the deed restrictions from the CYVs that I live in that talks about pets. No weight/size restrictions. Most all read the same.
Village Community Development Districts