HDL – Les Histoires de Lune 

Statistics

Breeding statistics

Breeding activity period	2022–2025 (3 years, 7 months)

Declared litters	16 litters, 167 pups
⨽ internal (born in the rattery)	⨽ 11 litters, 122 pups
⨽ external (other contributed litters)	⨽ 5 litters, 45 pups

All rat records	165 rats
⨽ females	⨽ 88 females (53.3 %)
⨽ males	⨽ 77 males (46.7 %)

Litter statistics

Average mother age	263 days (8.6 months)
Average father age	639 days (21 months)
Average litter size	10.4 pups per litter
Average sex ratio	0.892 (about 9 females for 8 males)

Lifespan statistics

Bred rats recorded as deceased	45 rats (36.9 % of recorded bred rats)
⨽ declared with known date	⨽ 40 rats (88.9 %)
⨽ presumed dead	⨽ 5 rats (11.1 %)

Average lifespan of bred rats	19.3 months (♀: 21.5 months – ♂: 17.8 months)
⨽ infant mortality excluded	⨽ 22.1 months (♀: 24.6 months – ♂: 20.4 months)
⨽ accidents excluded	⨽ 23.4 months (♀: 24.6 months – ♂: 22.6 months)

Oldest bred rat	HDL-FAE Cloud (deceased at 2 years, 11 months, 4 days)

Death causes statistics

Primary death causes by decreasing frequency

22.5 %	Respiratory
20 %	Neurological (brain, spinal cords, nerves)
15 %	Eye, ear, mouth, face
12.5 %	Infant mortality (up to 6 week old)
7.5 %	Other
7.5 %	Reproductive system
7.5 %	Accidents, traumas, poisonings
7.5 %	Old age, natural death (from 24 month old minimum)

Secondary death causes by decreasing frequency

12.5 %	Bronchitis, pneumonia
10 %	Pituitary tumor
7.5 %	Generalized cancer, leukemia, lymphoma
7.5 %	Mammary tumor
7.5 %	*Infant mortality (up to 6 week old)
7.5 %	*Old age, natural death (from 24 month old minimum)
5 %	Facial tumor (excluding Zymbal tumor)
5 %	Other head or neck related trouble
5 %	Other infant mortality cause
5 %	*Respiratory
5 %	*Neurological (brain, spinal cords, nerves)
2.5 %	Dental malocclusion
2.5 %	Facial abscess (excluding teeth and Zymbal gland)
2.5 %	Falls, fractures, head or spinal cord trauma (excluding fights)
2.5 %	Brain tumor
2.5 %	Other neurological trouble
2.5 %	Lung tumor
2.5 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
2.5 %	Pulmonary edema
2.5 %	Domestic accident (crush, door...)

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✓	16/11/2025	HDL Chummee	VGP-HDL Chaud lapin	9
✓	16/11/2025	HDL Chummee	VGP-HDL Chaud lapin	9
✓	02/03/2025	HDL Aaow	HDL-FAE Oups	13
✓	27/02/2025	OPR Mélitée du Mélampyre	HDL Fendi Mercury	5
✓	29/12/2024	HDL Cutie Patootie	HDL Jeff Bouclettes	10
✓	10/12/2024	HDL Sweetie Pie	HDL Fendi Mercury	14
✓	17/07/2024	HDL-TDC Kif-kif	CHC-DNR Smooch Criminal	12
✓	04/05/2024	HDL Tampoufle	DNR Pichu	15
✓	01/11/2023	HDL-ARD Selkie	TDC Ghibli	5
✓	20/09/2023	HDL-FAE Maïna	IND-DNR Dr Feelgood	11

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	HDL60489M	HDL	Hector †	Hee !	17/07/2024	20 mo	Other head or neck related trouble	♂
✓	HDL61588M	HDL-RMJ	Patatras !		02/03/2025	14 mo	– alive –	♂
✓	HDL61593F	HDL-RMJ	Niark Niark !		02/03/2025	14 mo	– alive –	♀
✓	HDL61363M	HDL	Alakay The Lion	Chiku	29/12/2024	16 mo	– alive –	♂
✓	HDL58687F	HDL	Crocrodile †	Crocrodile	11/09/2023	24 mo	Other neurological trouble	♀
✓	HDL58692F	HDL	Mumière †	Mumière	11/09/2023	30 mo	Old age, natural death	♀
✓	HDL61276M	HDL	Poljubac	An Invitation you can't decline	10/12/2024	16 mo	– alive –	♂
✓	HDL61275M	HDL	Drop of a Hat	Drop of a Hat	10/12/2024	16 mo	– alive –	♂
✓	HDL61277M	HDL	Saparazar	Blow Your Mind	10/12/2024	16 mo	– alive –	♂
✓	HDL61278M	HDL	Moquette	Caviar and Cigarettes	10/12/2024	16 mo	– alive –	♂