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| Total | 2998 |
| Inbred | 706 |
| Consomic | 91 |
| Congenic | 1146 |
| Mutant | 643 |
| Transgenic | 188 |
| Coisogenic | 13 |
| Recombinant inbred | 131 |
| Segregating inbred | 13 |
| Advanced intercross | 4 |
| Outbred | 53 |
| Hybrid | 4 |
| Conplastic | 1 |
| Wild | 5 |
With the development of new genomic modification technologies for the rat, the numbers of congenic, mutant and transgenic strains have grown rapidly.
