Rattery
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OPR – L'Opéra des P'tites Pensées 

Information

Owner Loulouteratoune
Founded in 2014
Country France
Localization Gondecourt
Zip Code 59147
Website https://operadespensees.weebly.com/
OPR

About

La raterie l’Opéra des P’tites Pensées (OPR) est un élevage amateur familial de rats domestiques à très petite échelle et non lucratif. Je suis amenée à déménager assez souvent pour le moment, mais ma localisation est toujours à jour sur le LORD et je garde un point fixe près de Beauvais dans l’Oise !

Je prône la reproduction réfléchie, argumentée et aussi éthique que possible, avec une approche basée sur la transparence, les connaissances sur l’espèce, des connaissances scientifiques, et sur tout l’amour que je porte à mes animaux. Ceux-ci font partie avant tout de la famille, je tiens à ce que mes ratons soient traités comme tels chez mes adoptants. Mes généalogies sont toujours accessibles et mises à jour autant que possible, mes choix toujours argumentés publiquement (car je ne fais pas que prétendre mes objects : je les prouve !).

Statistics

Breeding statistics
Breeding activity period 2014–2025 (11 years, 7 months)
Declared litters 14 litters, 153 pups
 ⨽ internal (born in the rattery)  ⨽ 14 litters, 153 pups
 ⨽ external (other contributed litters)  ⨽ 0 litter, no pup
All rat records 153 rats
 ⨽ females  ⨽ 76 females (49.7 %)
 ⨽ males  ⨽ 77 males (50.3 %)
Litter statistics
Average mother age 219 days (7.2 months)
Average father age 505 days (16.6 months)
Average litter size 10.9 pups per litter
Average sex ratio 1.013 (about 1 male for 1 female)
Lifespan statistics
Bred rats recorded as deceased 114 rats (74.5 % of recorded bred rats)
 ⨽ declared with known date  ⨽ 109 rats (95.6 %)
 ⨽ presumed dead  ⨽ 5 rats (4.4 %)
Average lifespan of bred rats 24.6 months (♀: 24.9 months – ♂: 24.2 months)
 ⨽ infant mortality excluded  ⨽ 25 months (♀: 25.4 months – ♂: 24.7 months)
 ⨽ accidents excluded  ⨽ 25.6 months (♀: 25.7 months – ♂: 25.5 months)
Oldest bred rat OPR-DOU Cynder (deceased at 3 years, 4 months, 17 days)
Death causes statistics
Primary death causes by decreasing frequency
27.52 %
Respiratory
17.43 %
Old age, natural death (from 24 month old minimum)
16.51 %
Unknown cause
15.6 %
Neurological (brain, spinal cords, nerves)
4.59 %
Digestive
4.59 %
Reproductive system
3.67 %
Other
3.67 %
Eye, ear, mouth, face
2.75 %
Accidents, traumas, poisonings
1.83 %
Infant mortality (up to 6 week old)
1.83 %
Cardiovascular
Secondary death causes by decreasing frequency
17.43 %
Bronchitis, pneumonia
17.43 %
*Old age, natural death (from 24 month old minimum)
16.51 %
Undetermined cause (known date)
12.84 %
Pituitary tumor
4.59 %
*Respiratory
3.67 %
Mammary tumor
2.75 %
Lung tumor
1.83 %
Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
1.83 %
Stroke
1.83 %
Digestive tumor (stomach, liver, pancreas, intestines...)
1.83 %
Zymbal gland tumor
1.83 %
Generalized cancer, leukemia, lymphoma
1.83 %
Pulmonary edema
1.83 %
Facial tumor (excluding Zymbal tumor)
1.83 %
*Infant mortality (up to 6 week old)
0.92 %
Heart failure, valvular disease
0.92 %
Other respiratory trouble
0.92 %
Intestinal obstruction (excluding megacolon)
0.92 %
Uterine tumor
0.92 %
Other tumor (salivary, spleen, adrenal, thyroid...)
0.92 %
Veterinary accident (anesthesia during a minor operation, medical error, etc.)
0.92 %
Other digestive trouble
0.92 %
Sepsis
0.92 %
Digestive abscess
0.92 %
*Cardiovascular
0.92 %
*Neurological (brain, spinal cords, nerves)
— Created on 22/04/2014 by Loulouteratoune. Last modified on 20/12/2025.

Related entries

Last contributed litters
See all
State Birth date Dam Sire Size Actions
✓ 15/09/2025 OPR-HDL Madame la Marquise RSH Nigel 11 Edit Litter
✓ 13/04/2025 RB. Helldiver OPR Hazbin 7 Edit Litter
✓ 27/02/2025 OPR Mélitée du Mélampyre HDL Fendi Mercury 5 Edit Litter
✓ 08/09/2024 OPR Mélitée du Mélampyre DEL Othello 8 Edit Litter
✓ 15/02/2024 OPR Fizwizbiz LTE Bulby 11 Edit Litter
✓ 10/07/2023 OPR On dirait un tout petit bébé Licorne OPR Severus 16 Edit Litter
✓ 12/01/2023 DNA-ARK Catch the Wave PRH-RCD Dabou 7 Edit Litter
✓ 01/12/2021 CHC Imladris OPR Ood 12 Edit Litter
✓ 29/09/2020 RSH Waddiwasi IND Mylo Xyloto 11 Edit Litter
✓ 20/07/2019 OPR-MOL Elysia Crispata DOU Childe Roland to the Dark Tower Came 16 Edit Litter
Recently modified rats
See all
State Identifier Prefix Name Pup Name Birth Age Death cause Sex Actions
✓ OPR59336M OPR Lumos † Machaon 15/02/2024 22 mo Pituitary tumor ♂ Edit Rat Declare Death
✓ OPR58427M OPR Tao † Antochère 10/07/2023 30 mo Bronchitis, pneumonia ♂ Edit Rat Declare Death
✓ OPR57672F OPR Déshonneur sur ta Vache † 12/01/2023 23 mo Pituitary tumor ♀ Edit Rat Declare Death
✓ OPR57673F OPR Ohana veut dire famille † 12/01/2023 23 mo Undetermined cause ♀ Edit Rat Declare Death
✓ OPR57674F OPR Nom d'une Chandelle ! † 12/01/2023 33 mo Old age, natural death ♀ Edit Rat Declare Death
✓ OPR57675F OPR On dirait un tout petit bébé Licorne † 12/01/2023 24 mo Stroke ♀ Edit Rat Declare Death
✓ OPR57676M OPR Pocus † On m'appelle MONSIEUR Porc 12/01/2023 32 mo Old age, natural death ♂ Edit Rat Declare Death
✓ OPR57677M OPR Hocus † Jafar, j'suis coincé ! 12/01/2023 20 mo Bronchitis, pneumonia ♂ Edit Rat Declare Death
✓ OPR57678M OPR Boo † Deuxième Etoile à droite, et tout droit jusqu&#039 12/01/2023 27 mo Cardiovascular ♂ Edit Rat Declare Death
✓ OPR61270F OPR-HDL Madame la Marquise Marquise de Ganay 27/02/2025 10 mo – alive – ♀ Edit Rat Declare Death