When can you speak of an 'intelligent organism'?
A life form must meet the following requirements in order to
obtain the significant meaning 'intelligent':
The organism must be able to adapt to its environment (or adapt
its environment to itself).
The organism must have a good working memory.
The organism must be able to learn from experiences and apply
The organism must be able to understand complex ideas.
The organism must be able to reason (in a logical way).
The organism must be able to solve problems by thinking (not only
by haphazardly doing something).
Humans meet these conditions, but also monkeys, dolphins and even
crows can show reasonably intelligent behavior.