I posted this message on the Monkey Forest page, but I wanted to post it here also in hopes that I can be helpful for people in a similar situation in the future.
My husband and I are diligent researchers when we plan our trips, so we had read about the aggressive monkeys at the Monkey Forest. We made extra sure that we didn't even have a piece of gum on us when we arrived and didn't buy any food to feed the monkeys. We bought our ticket to go into the forest, and a monkey immediately ran up my husband's leg and started rustling through his pocket. He went to shoo the monkey away, and it bit him on the knuckle. The monkey ran away, and then came charging back at him, climbed up his body, and bit him on the arm. Then, it attacked me also, running up my body and lunging at my face with its teeth. Luckily, my husband was able to shoo the monkey off me before it bit me, but had he been 10 seconds slower, I surely would've had a chunk taken out of my face.
We were in shock. There were staff in the area when this happened and I was yelling for help, but no one even glanced our way. We went back to the front desk and asked what we should do about the bites, and the staff directed us to the first aid booth nearby.
The staff seemed surprised that the monkey had attacked us when we didn't have food, but they said that the bites were small and wouldn't cause any problems. They cleaned them out and had us sign a log saying we had received treatment; the log was PAGES long! The staff assured us that none of the monkeys had rabies, but we were very skeptical that they would even have this information, since the monkeys were free to come and go from the forest (they were running on the roof of our hotel at night), and there were stray dogs walking around in the forest also.
When we got back to our hotel, we did some research and found that there had been a recent outbreak of rabies in dogs on the island. We also found a study later that night that said that 40% of the visitors to the forest are either bitten or scratched. We talked to the people at our hotel, and they arranged for a doctor to come to our room. The doctor told us that there hadn't been a case reported of rabies being transmitted from a monkey to a human, but she had several rabies vaccinations on hand should we choose to get one. The visit and injection was very affordable ($60 USD total), and the doctor sold us an additional vaccine to take with us should we not be able to find a doctor in the next 2 countries we were visiting to give the remaining shots in the series.
Dealing with the rabies shots was very scary and confusing, and I would be happy to share any information that might be helpful to someone in a similar situation. Please feel free to send me a private message and I would be happy to help. After Ubud, we got shots in Kuala Lumpur and Bangkok.
Anyways, I gave the Monkey Forest 2 stars because it was really beautiful when we went in. However, we saw monkeys jumping on and scratching NUMEROUS visitors, mostly children. The monkeys were chasing the children, running up them, and sometimes took things from them (ie. hats). Kids were crying, people had scratch marks on their arms, necks, and backs, and the staff didn't seem to be paying any attention. I would NEVER bring a child there, and I would recommend visiting ONLY if you are very, very cautious, and wearing long sleeves. Be VERY, VERY careful if you choose to visit!