What about bacteria? If personality amounts to observed individual differences in behavior, the answer is yes:
Insects: With social insects we face a different question. We are dealing with the hive mind. As J. Scott Turner shows in Purpose and Desire, a termite mound has a hive mind “a communal brain with no specific physical location.” Ants, bees, and termites cooperate in huge numbers to get a job done, all seemingly sharing one “mind” which is still little understood …
Still, bees, which have been studied, show some differences in personality: “The findings offer a new window on the inner life of the honey bee hive, which once was viewed as a highly regimented colony of seemingly interchangeable workers taking on a few specific roles (nurse or forager, for example) to serve their queen. Now it appears that individual honey bees actually differ in their desire or willingness to perform particular tasks, said University of Illinois entomology professor and Institute for Genomic Biology director Gene Robinson, who led the study. These differences may be due, in part, to variability in the bees’ personalities, he said. ” (Phys.org, March 8, 2012)News, “Can insects, bacteria, and plants have personalities too?” at Mind Matters News
Ants and beetles show individual differences too. So do bacteria. “This bacterial individuality — known more technically as phenotypic heterogeneity — upends decades of traditional thinking about microbes.” – Carrie Arnold, “Bacterial Clones Show Surprising Individuality,” Quanta, (September 4, 2019)
The world is full of intelligence but human intelligence is unique.
You may also wish to read: Why do researchers wonder whether animals have personalities? Every friend of dogs, cats, or birds knows what some struggle to prove. Let’s take a look at what they found. Mammals, birds, and reptiles differ by ability but those that have been studied seem to have individual personalities within the frame of their intelligence.
Your soul has no “off switch.” A major modern misunderstanding of the human mind is to assume that it is like a machine with an “on” and an “off” switch. (Michael Egnor)