EPR – Au Pays de Rattlousi 

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Statistics

Breeding statistics

Breeding activity period	2015–2025 (9 years, 8 months)

Declared litters	26 litters, 210 pups
⨽ internal (born in the rattery)	⨽ 26 litters, 210 pups
⨽ external (other contributed litters)	⨽ 0 litter, no pup

All rat records	217 rats
⨽ females	⨽ 133 females (61.3 %)
⨽ males	⨽ 84 males (38.7 %)

Litter statistics

Average mother age	190 days (6.2 months)
Average father age	327 days (10.7 months)
Average litter size	8.1 pups per litter
Average sex ratio	0.632 (about 19 females for 12 males)

Lifespan statistics

Bred rats recorded as deceased	181 rats (83.4 % of recorded bred rats)
⨽ declared with known date	⨽ 136 rats (75.1 %)
⨽ presumed dead	⨽ 45 rats (24.9 %)

Average lifespan of bred rats	21.8 months (♀: 21.7 months – ♂: 21.9 months)
⨽ infant mortality excluded	⨽ 22.5 months (♀: 22.9 months – ♂: 21.9 months)
⨽ accidents excluded	⨽ 23.3 months (♀: 23.8 months – ♂: 22.7 months)

Oldest bred rat	EPR Pantalaimon (deceased at 3 years, 3 months, 10 days)

Death causes statistics

Primary death causes by decreasing frequency

33.09 %	Other
21.32 %	Old age, natural death (from 24 month old minimum)
15.44 %	Unknown cause
8.09 %	Respiratory
6.62 %	Accidents, traumas, poisonings
3.68 %	Eye, ear, mouth, face
3.68 %	Neurological (brain, spinal cords, nerves)
2.94 %	Infant mortality (up to 6 week old)
2.21 %	Urinary system (kidney, bladder)
0.74 %	Cardiovascular
0.74 %	Reproductive system
0.74 %	Muscles and skeleton
0.74 %	Digestive

Secondary death causes by decreasing frequency

21.32 %	*Old age, natural death (from 24 month old minimum)
16.91 %	Undetermined tumor (affected organ unknown)
15.44 %	Undetermined cause (known date)
10.29 %	*Other
3.68 %	Veterinary accident (anesthesia during a minor operation, medical error, etc.)
3.68 %	*Respiratory
2.94 %	Bronchitis, pneumonia
2.94 %	Virus, epidemic outbreak, immune deficiency (SDA, Sendai, Tyzzer...)
2.21 %	Stroke
2.21 %	*Infant mortality (up to 6 week old)
1.47 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
1.47 %	Undetermined infection or abscess
1.47 %	Dental malocclusion
1.47 %	Generalized cancer, leukemia, lymphoma
1.47 %	Renal failure
1.47 %	Domestic accident (crush, door...)
0.74 %	Tooth abscess
0.74 %	Stillborn
0.74 %	Muscle tumor
0.74 %	Intestinal obstruction (excluding megacolon)
0.74 %	Other head related trouble
0.74 %	Heart failure, valvular disease
0.74 %	Uterus infection (metritis, pyometra)
0.74 %	Pituitary tumor
0.74 %	Brain tumor
0.74 %	Lung tumor
0.74 %	Other respiratory trouble
0.74 %	*Urinary system (kidney, bladder)
0.74 %	*Eye, ear, mouth, face

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✗	29/01/2025	EPR Makalu	MIL Capitaine	10
✓	09/07/2024	ETR Nokstella	EPR-VIC Titi	14
✓	15/11/2023	MIL Sellen	EPR-VIC Sontar	12
✓	17/08/2022	LTE B'Queenie	EPR Koda	9
✓	17/06/2021	MIL Tempete	EPR Gribouille	9
✓	17/07/2020	EPR Kenya	MIL Fang Xin	11
✓	27/02/2020	EPR Vénus	EPR-NMS Perceval	14
✓	23/11/2019	EPR Moana	EPR-NMS Karadoc	15
✓	09/08/2019	RB. Surprise	RB. Nardole	8
✓	19/05/2019	NMS-DTC Octavia	ETR Helvede	14

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	EPR61016F	EPR	Eka		29/01/2025	1 mo	– alive –	♀
✓	EPR61017F	EPR	Lina		29/01/2025	1 mo	– alive –	♀
✓	EPR61018F	EPR	Chara		29/01/2025	1 mo	– alive –	♀
✓	EPR61019F	EPR	Pamcha		29/01/2025	1 mo	– alive –	♀
✓	EPR61020F	EPR	Sata		29/01/2025	1 mo	– alive –	♀
✓	EPR61021M	EPR	Do		29/01/2025	1 mo	– alive –	♂
✓	EPR61022M	EPR	Chah		29/01/2025	1 mo	– alive –	♂
✓	EPR57389M	EPR-VIC	Sontar †		17/08/2022	27 mo	Other head related trouble	♂
✓	EPR57388M	EPR-VIC	Sitka †	Mondas	17/08/2022	27 mo	Old age, natural death	♂
✓	EPR57384F	EPR-VIC	Kandoka †		17/08/2022	27 mo	Tooth abscess	♀