Zoo

File Format
Name	Zoo
Ontology	Electronic File Formats Archiving Zoo
Extension(s)	.zoo
PRONOM	x-fmt/269

ZOO was one of the many competing archive formats in the 1980s, and was based on the LZW compression system. It had some popularity with Open/VMS and Amiga systems, but didn't ultimately win out over ZIP.

References

• Zoo (file format) (Wikipedia)
• information at fileformat.info here
• Archive format info, including ZOO
• ZOO file header format (among other archive types)