Children going into Nigeria do not require any additional documents that an adult would not require.
Cats, Dogs and Ferrets require several documents in order to be transported into the country:
An Approved Import Permit
A Rabies Vaccination between 30 days and 12 months prior to entry with a copy of the Rabies Certificate
A Blood Titer Test three months or more prior to entry
A Bi-Lingual Veterinary Certificate for Nigeria completed by a USDA or CFIA accredited Veterinarian or endorsed by a Governmental Authority for animals or agriculture
It’s also advisable to have your cat or dog microchipped, even though it is not required.