When driving along the Ascension roads there will be some things that you will come across, more than 99% likely you'll come across all of them.
Donkeys: These guys are wild, they are most commonly found around the Georgetown and One Boat area going up and down those roads. They are protected, so please please please do not hit one with your car. You will suffer a huge fine! They have adapted to humans on the island and will usually stay out of the way, but you will find the occasional one in the road.
Sheep: These ones are in the road more often. They have been known to be hit a little more often than a donkey. Some Saint boys try to catch them and make mutton curry, but you eat the meat at your own risk because they are wild. The sheep are mainly found in the Two Boats village and Traveller's Hill area. Black and White ones.
Land Crabs: These are found more up the mountain or up the devils ashpit hill or sea crabs along the beaches. Don't drive over these their claws will apparently pop your tyres.
Rabbits: Last but definately not least, the rabbits. There are like 20 rabbits run over everyday. The saying is, that you have not been on Ascension until you've seen a dead rabbit on the road...which is everywhere and everyday lol. While it is still horrible seeing it and even running over one, you can't escape it really.
All these animals are wild, but we all kind of live in peace together and everyone goes about doing their thing.
Be very careful where you go swimming in the sea on Ascension, one of the main places to avoid is Long Beach, people do not going swimming there because the undertow is too dangerous. Generally people swim at the main beaches of English Bay and Comfortless Cove. Watch out for those under tows they can be very dangerous, and I know from experience as I almost lost my boyfriend to an incident like that, where he almost drowned.
Ascension is approx eight degrees below the equator and as such the climate varies little all year, essentially you get sun and lots of it .. be sensible and wear sun screen. I slapped on loads of factor 30 and still got (slightly) burnt. One person in our party thought it would be clever to try it with cooking oil .. oh dear! Needless to say he got very red and very sore!
What they never warned us about in the Ascension Island information pack was the mosquitoes. They are particularly prevalent at Traveller's Hill and I got bitten to buggery by the little ----s!