Before getting started with his wildlife showcase, Fallon commented on how closely Robert resembles his father.
"A lot of the viewers said you look like your dad. You're a spitting image. He'd be so proud," Fallon said before showing the audience a side-by-side photo of the pair at the age of 13.
"It's a bit wild. When my mom first showed this to me, I thought it was me," the young wildlife expert said. "I can't tell them apart. I said, 'It's me. What's the big deal?' Until you look at dad's shirt, you don't even realize that it's two different people."
Robert then introduced the late night host to Jane, a dictator scorpion whom Fallon was unwilling to hold. Next up was a pair of playful baby black bears-- one of which ended up nibbling on Fallon's thumb as Robert commented on how they can be "hyperactive."
Other animals Fallon was introduced to included a binturong who smelled his head and a green aracari, one of the smallest species of toucan. The segment ended with Robert having the bird fly to Fallon has he stood inside the audience.