I'd take it as gospel, that D&M stuff is original and safe to use on any project for sale.
The other is probably a copy with a few tweaks to beat countries weak on copyright laws...if not an exact copy
Spent probably 8 hours online in the last few days searching for "Critter" 3D models, and it's just downright discouraging to see the outright theft of good models with a price tag under $2USD.
Found an Owl model I spent $28 bucks for at CGTraders...and it was either under $5 or given away for free with a donation to an Eastern European country for an orphanage or such
Wish there was some kind of centralized directory of sources to authenticate origin!!
But at $2, you KNOW somebody is playing fast and loose with someone else's work
Go D&M and rest easy:)