Any reasons to avoid using random IDs in a FactoryBot factory definition?

I've often heard not to use random data when writing tests, which seems reasonable for most data.

However, I can't think of any reason why a random ID for records would be bad?

For example:

FactoryGirl.define do
  factory :dog do
    id { rand(100_000) }
    name "Sparky"
    legs 4
   end
  end
end

As long as I make sure any associated records use the correct, randomly-assigned ID, I don't see how this could be an issue.