Hi Ara,
We've conserved Singers for 20 plus years and have seen all kinds of personalities, but generally speaking, No.1 A human has to be smarter than the Singer(s) they want to keep and that is oftimes a problem and No.2 They are a wild dog and as such have a very strong prey drive. For example, generally speaking they'll attack most any small animal or bird unless they're raised with them, then that's different excluding the time the females come into heat then that's yet another matter.
However, for all their faults, there are some of us here who care for them a great deal. We have owned up to 22 at one time. We now have 14 as my wife and I are getting older and we're trying to cut back on our work.The largest recorded collection in the US was in the state of Michigan. Those idiots had 38 and actually exercised the entire 38 at the same time in a large open area. Totally unbelievable as Singers are not pack animals. Most Singer enthusiasts have one or two. We estimate a captive world population at two hundred. No one knows how many or how few are in the wild. The wild population has been pushed away over the years by humans and so now Singers exist only in the remote highlands of New Guinea. They are extremely hard to access and study so as a consequence, no studies exist. They may very well go extinct without man having ever studied them at all.
We hope to have a litter of pups either this Fall yet or next fall as we have 3 people who want pups and I would like to have two or three pups to train for "drop lead" hunting.
Hope this is helpful,
Kindest regards,
oldsingerman20