The Jefferson Parish Animal Shelter has taken custody of the dog.
The investigation is ongoing and additional charges may be forthcoming.
The arrest of Sanderford followed a complaint made to State Law Enforcement that the suspect was videotaping the act with the dog.
Computers were seized. More forensic examinations are being conducted.
Sanderford remained in jail on $11,000 in total bond — $1,000 for the crimes against nature charge and $10,000 for the cruelty to an animal charge.