| Other name(s) | Felis Domesticus, Chester. |
|---|---|
| Species | Cat |
| Breed | Siamese cat |
| Sex | Male |
| Born | 1968 |
| Died | 1982 |
| Known for | First cat to co-author and author a physics paper |
| Owner | Jack H. Hetherington |
F. D. C. Willard (1968–1982) was the pen name of Chester, a Siamese cat, used on several papers written by his owner, J. H. Hetherington, in physics journals. On one occasion, he was listed as the sole author.