FNRR – Fanratics Rattery
About
Fanratics Rattery is a Brazilian hobby rattery located in Mairiporã, São Paulo. My breeding program is dedicated to the responsible and carefully planned breeding of domestic rats, with particular attention to health, longevity, sociability, stable temperament, physical conformation and the long-term development of each line. I maintain detailed records of litters, ancestry and descendants in order to preserve reliable genealogical and health information for future generations. Fanratics is also dedicated to sharing reliable information about the care, nutrition, behavior, welfare and responsible breeding of domestic rats.
Statistics
Breeding statistics
| Breeding activity period |
2026 (just now) |
| Declared litters |
0 litter,
no pup |
| ⨽ internal (born in the rattery) |
⨽ 0 litter,
no pup |
| ⨽ external (other contributed litters) |
⨽ 0 litter,
no pup |
| All rat records |
16 rats |
| ⨽ females |
⨽ 10 females (62.5 %) |
| ⨽ males |
⨽ 6 males (37.5 %) |
Litter statistics
| Average mother age |
N/A |
| Average father age |
N/A |
| Average litter size |
N/A |
| Average sex ratio |
0.6 (about 5 females for 3 males) |
Lifespan statistics
| Bred rats recorded as deceased |
No rat (0 % of recorded bred rats) |
| ⨽ declared with known date |
⨽ No rat (100 %) |
| ⨽ presumed dead |
⨽ No rat (100 %) |
There aren’t enough rats with consolidated information to compute relevant mortality statistics.
— Created on 12/07/2026 by Fanratics. Last modified on 08/09/2026.
