Hi Leopard Tracker,
There are no baboons in the Woody cape section of the park so you don't need to watch out for those on the 2-day Alexandria hiking trail or the 7-km Dassie trail. Baboons occur in the Nyathi, Zuurberg, Kabiouga and Darlington sections of the Park, not in Addo main camp. They have been sighted infrequently on the Colchester side too.
If you are planning to do the trail in summer/warmer weather, you need to keep an eye out for snakes - puffadders, cobras and night adders occur here. But this is general practice on any hiking trail to keep an eye out for snakes.
You will find in the forest that its best to allow one of your friends to take the lead so that they walk into the spiderwebs first
Animals that occur in the forest include bushbuck (you might see these if you walk quietly), duiker, bushpig (you might see digging signs), porcupine (you might see signs of gnawing on tree bark/roots). Brown hyena and leopard tracks have been seen but the animals themselves have not been seen in the past over 30 years. Tree dassies can sometimes be heard at night.
The birdlife in the forest is wonderful. knysna touracos, forest weavers, trumpeter hornbills are a few highlights. I saw a long-crested eagle once on the outskirts of the forest and ground hornbills a few times in the pastures near the forest.
Along the coast, keep an eye out for the coastal birds, dolphins in the waves (in groups of up to 1000s!) and whales in season. You might also see tracks of kudu, jackal, bushbuck, duiker and the pygmy hairy-footed gerbil in the dunefields.
All I can say is this is a fantastic trail to do - I've done it four times - so go for it