Owning reptiles

So there are some laws I never get straightened out.

Wherever I look, I see the same text copied and pasted, saying you can't own any "wild animal" over 2 kg, and no mammal over 10 kg?! (That would mean, no horses or livestock, definitely not most dogs... so that law must be poorly worded.)

Is says this about Spain in general:

In general, the following are considered as dangerous animals and owned under specific conditions:

Wild animals including: reptiles (alligators, crocodiles and poisonous snakes), any wild animal weighing over two kilograms, poisonous fish and mammals weighing over 10 Kg when adult.

And this about Andalucia specifically:

Note: From October 2008, residents in Andalucía are forbidden from owning exotic or wild animals as pets. Residents have six months to declare their pets at the local town hall and deliver them to the designated authorised establishment. This applied to:

Crocodiles, caimans, poisonous amphibians and fish, snakes, spiders and insects

All species of reptile that weigh over 2 kilograms when fully-grown

All primates and wild mammal species that weigh more than 10 kilograms as adults (for carnivores this is limit is 5 kilograms)

So in Andalucia (where I'm not going), reptiles over 2 kg are banned, but in the rest of the country, only venomous snakes, alligators and crocodiles. Correct?
Because I would want to keep a couple of small caimans (if it would require some extra chat with the authorities/a license, that could be done), and some larger snakes (Boa constrictor, harmless but definitely weighing a few kilos). The law (outside Andalucia) says nothing about caimans, only crocodiles and alligators.

But "wild animal" would essentially mean everything except for farm animals, dogs and cats. So then... you can't even have a large macaw, because the largest can weigh over 2 kg. O_o Or not even a large rodent.
And again, that "no mammal over 10 kg" just makes no sense at all.

So please help.