Assistance Dogs and Service Animals

I found an article online titled "Assistance Dogs & Service Animals for the Disabled" which was posted by "archonli" on the website, arch-online.org/assistance-dogs-service-animals-for-the-disabled.htm. The introduction of this article begins with describing what exactly a service dog is and what they do. The article says that a service animal is highly trained to perform specific tasks in order to provide care to their owners and also provide great companionship as well. It states how service animals benefit society because they can be trained and then can be enjoyed for what they do for their owners with disabilities. The article quotes the US Department of Justice, the Americans with Disabilities Act in saying that "Service animals are working animals, not pets." This statement is true, the animals provide many of the benefits to their owners that anyone would get by owning an animal, but they also provide so much more. These animals, more specifically dogs, help their disabled owners through daily activities by performing vital tasks. The most common service animal would be dogs that assist the blind, however, many people do not realize all the other disabilities that dogs can assist with or even the other animals that can be trained. Guide dogs for the blind are trained to obey basic commands from their owner, alert the appropriate people in case of any emergency, stop when approaching certain places such as busy streets or construction zones, behave themselves in public, and stay close to their owner at all times. Dogs can also be trained to also assist with deafness and invisible diseases such as diabetes and anxiety. The article also mentions how in some cases, cats and monkeys can also be trained to be service animals. Obviously dogs are the most common service animal, but are they the most effective? What other animals could possibly be trained to be a service animal? The article mentions how the dogs have to allow themselves not to be petted, how are they trained to do that? And why does the article only really elaborate on guide dogs? I thought this article was very informative but I wish that it would've went into more detail about the other types of services that dogs can provide. This would be some good information to include in our documentary if we were to include different sections about the different services the dogs provide, and include a section about guide dogs.