Can I keep just one goat?

[4 Georgia Hens]

My friend has had one goat since it was an infant. Goat is 5 years old. It roams all around her property.
I on the other hand have a 3.5 acres small what I call a farm. 3 Chickens, 4 guineas, one Sun conure, my service dog, and I recently adopted a cat from the local shelter. I am looking for a young goat (female) to adopt or foster any ideas?

Very interesting... Thank you for sharing!