However smart we thank animals are, IQ is not the right metric (measure) of intelligence in non-human species. The IQ is intended for humans and is based on sets of specified tests.
Yes, a much better way to pose the question. They have to be tested on a similar task, such as maize or puzzle learning. Dr. Gordon Burghardt, who is a RG member, is an expert on comparing species, from lizards to bears and humans.