The scientific or taxonomic name would be Alligator mississippiensis.
Addidional answer
But it's not a mammal. Hey, where are all these mammal questions coming from?
The scientific or taxonomic name would be Ulmus americana.
The scientific or taxonomic name would be Prunus americana.
The scientific or taxonomic name would be Carduelis tristis.
The scientific or taxonomic name would be Anas americana.
The scientific or taxonomic name would be Ilex opaca.
The scientific or taxonomic name would be Hedylidae.
The scientific or taxonomic name would be Apatelodidae.
The scientific or taxonomic name would be Sematuridae.
The scientific or taxonomic name would be Scolopax minor.
The scientific or taxonomic name would be Dioptidae.
The scientific or taxonomic name would be Rana grylio.
The scientific or taxonomic name would be Fulica americana.
The scientific or taxonomic name would be Taxidea taxus.
The scientific or taxonomic name would be Crassostrea virginica.
The scientific or taxonomic name would be Homarus americanus.
The scientific or taxonomic name would be Ulmus americana.
The scientific or taxonomic name would be Prunus americana.