this is great, because as far as i know, one of the reasons cats like to knock things off counters is because it gets a large reaction from us. they don’t realize that it’s an unhappy reaction - they’ve just discovered that they can exert a unique kind of agency over their world.
imagine if you walked into a room and there was a button on the wall. you’d want to press it and see what happened. if it did something like make a beep or change the lights, most people will immediately press it again in response, testing out whether it happens again, or what the pattern is.
so the cat is like, huh, wonder what happens if i do this - and then it gets a Big Reaction! it is having a major impact on its environment! cool! wonder if it happens every time? OH IT DOES! this is fun!
and then the dog is getting treats, which dogs hella like. double enrichment! A+ video.
I love how the cat watches the dog gobble down almost a whole fistful of the shit the cat is dropping on the floor before the cat goes ‘hang on, maybe this is edible’
So, first thing you need to know is that is a very visibly healthy adult green iguana. Every part of the iguana is sharp. The claws evolved to haul a ten pound lizard up a tree. The spines are like tiny icepicks. The tail is a bullwhip. The teeth evolved to shred leaves, but they'll just as easily shred your flesh. Good luck making a healthy adult iguana do anything they don't wanna. That puts us on our first thing to look at- is the animal capable of defense and getting away, physically? Yes, definitely.
Next thing to know is what does a threatened or scared iguana look like? When an iguana is threatened, it doesn't stand on its hind legs like that; it stands on all fours and puffs itself up to look bigger, aggressively bobs its head (note: head bobbing is a behavior used for a LOT of things, it does need context- for example, they also head bob as part of mating displays), there is hissing, there is tail whipping- iguanas are not subtle creatures. None of this is the behavior of an iguana that feels threatened or is being a threat!
So what does standing like that mean? That's just simple reaching. The iguana sees something they want and is attempting to reach it, and what they want appears to be uppies, because they settle into the human's grip immediately.
Then, we see some GREAT handling from the human. There's really great communication happening between the two of them! The person picks up the iguana very securely- pelvis and pectoral girdles are well supported, and he doesn't grab. (Iguanas typically do NOT like being grabbed around the sides; many of their predators are birds and coming at them from above or gripping the sides is scary!)
As he goes in for the pet, he lets the iguana support their back half on his knee. The hold is secure but not tight; at any point, if the iggy was distressed, they could leave. But they don't- instead, you see them leaning into the pets, actively participating in the behavior. They're not even closing their eyes to block stimulus. They want this to happen.
This is the kind of bond that's possible when you can prove to a big lizard that you're trustworthy, and easily the best iguana video I've seen in a long time. Thank you for tagging me in!
Some green iguana body language resources under the jump!
Barten 2003. Green Iguana Management and Husbandry. Iguana: Journal of the International Iguana Society. I refer to this guy a lot when thinking about iguana behavior because even though the Green Iguana Husbandry issue of Iguana came out 22 years ago, Steve is a member of my herp society and has forgotten more about iguanas than any of us will ever know.
Burghardt 1977. Social behavior in hatchling green iguanas: life at a reptile rookery. Science.
Yes, Burghardt's iguana stuff is older. Yes, it's still highly relevant in the world of reptile ethology. If you can get your hands on a copy of Iguanas of the World, it's amazing how well it holds up.
Kaplan- everything on anapsid.org is at least 10 years old, but that doesn't change how valuable some of it is. Melissa knows her stuff, she just can't have iguanas anymore and unfortunately her health interferes a lot with what she wants to do.
Behavior article collection
Change-Related Stress in Green Iguanas and Other Reptiles
Interpreting Non-Breeding Behaviors in Green Iguanas
Testosterone, Aggression, and Green Iguanas
Köhler 2003. Green Iguana Communication. Iguana: Journal of the International Iguana Society.
Rice et al. 2022. Heads Nods and Boat Bobs: Behavior of Iguana Iguana Is Affected by Environment and Boat Traffic in Riparian Tropical Forest. Biotropica.
Darren Naish wrote a cool blog post for Tetrapod Zoology that's got a lot of social behavior observations! His blogs are always backed up with great sources and evidence.
No worries here at all! Kenyan sand boas are big diggers - this snake is trying to burrow in the glove and isn’t sure why it’s not working out so hot. They’ll figure it out eventually.
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