Help ID caterpillar

[Mini8leggedfreak]

I need an ID on a massive caterpillar that was found in napanee Ontario this thing was about 3/4” to 1” thick......huge

 

[chanda]

That appears to be a Cecropia Moth caterpillar, Hyalophora cecropia.

Compare to this one: https://bugguide.net/node/view/691664/bgimage or this one: https://bugguide.net/node/view/29178/bgimage

 

[Mini8leggedfreak]

That’s it. Thankyou!