An absolute unit holy cow
Yo, frogs & toads are just… inclined to look chonky no matter their size.
danger noodle. That thing is terrifying
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its like they don’t even bother to try.
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They might actually be more liquid then cats. Every one I ever see just fills their hole and looks supremely comfortable
DANGER, Will Robinson!
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Wow!!!
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Got another for y’all, check out this nice specimen of a beech. Dude was hanging out on a hillside and clearly missed being clearcut in the past like the rest of the forest.
https://www.inaturalist.org/observations/149175486
Big trees man. They just do it for me.
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Thank you for this post - I am loving everyone’s Big Bois!
Here are a few of mine:
Biggest moth, by far, that I have ever seen:
https://www.inaturalist.org/observations/38780563
Biggest scorpion:
https://www.inaturalist.org/observations/91333968
Surprised by the size:
https://www.inaturalist.org/observations/50751062
And was so much bigger than any other Coast Night Snake that I’ve seen, I thought it could be a different species!
https://www.inaturalist.org/observations/134813807
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Acromyrmex queen
approx 18 - 20 mm length
quite impressive in flight even at worker size (about half this)
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A massive Sugar Pine, Pinus lambertiana, from Yosemite National Park in the 1980s:
https://www.inaturalist.org/observations/8935529
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Didn’t that Katydid give you a bite? 
I also came across a similar one many years ago in the Drakensberg, it gave me the mother of all chomps, really impressive for a creature that has mandibles not even a third of the size of that of Blister Beetles
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The female was not small… the male (left) was huuuge
Standing between the roots of a massive Ceiba tree looking up… feeling so small
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How about tree leaves? I’m pretty sure that the basswoods hold the native size record in Canada. This one lives along my ‘lazy-day’ trail (closest walk to my home)
.
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Spotted the other day. Technically? It’s possibly the largest, heaviest, and oldest species in Canada and perhaps the world.
Okay, maybe not this particular specimen, but… a cousin, perhaps?
And just for some scale…
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Honey mushroom! The rhizomes look so alien, we found a bunch the other day but nothing this big
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I for one, welcome our fungal overlords.
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This is a great topic. Have have just the thing to share though nothing like a Blue Whale 
. It happens to be the world’s 
largest land snail 
. Acquired in Ecuador 
last November. Here it is.
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Scale’s a bit hard to judge in the photos, but here’s a 500+ year old Longleaf Pine in south Georgia: https://www.inaturalist.org/observations/129675348
Bonus: Huge rattlesnake in St Marks NWR, Florida- had to be at least 4 ft long, but was not precisely measured for what I hope are obvious reasons: https://www.inaturalist.org/observations/131371678
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South Korea’s Natural Monument No. 30, a Ginkgo biloba tree at Yongmunsa (Buddhist temple):
From Wikipedia:
Natural Monument No. 30: An enormous gingko tree on the temple grounds, believed to be the largest in Asia, and estimated to be 1100 to 1500 years old. It is 42 meters high and 14 meters in circumference at the base. It yields 100 straw bags of gingko nuts every year.
I need to go back in the fall some time and get photos when the leaves have turned golden yellow.
The leaf of another Korean plant, Magnolia obovata:
That’s a photo of my thumb and the front portion of the leaf. According to Wikipedia, “The leaves are large, 16–38 cm (rarely to 50 cm) long and 9–20 cm (rarely 25 cm) broad”.
Not sure what my chonkiest Lepidopteran sighting is, but the slug caterpillar moths (Limacodidae) give some good choices. Here’s a Thosea sinensis larva I encountered last fall:
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