DEL – D’ Ombre et de Lumière 

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Statistics

Breeding statistics

Breeding activity period	2016–2025 (8 years, 6 months)

Declared litters	48 litters, 528 pups
⨽ internal (born in the rattery)	⨽ 36 litters, 384 pups
⨽ external (other contributed litters)	⨽ 12 litters, 144 pups

All rat records	527 rats
⨽ females	⨽ 277 females (52.6 %)
⨽ males	⨽ 250 males (47.4 %)

Litter statistics

Average mother age	232 days (7.6 months)
Average father age	516 days (16.9 months)
Average litter size	11 pups per litter
Average sex ratio	0.903 (about 10 females for 9 males)

Lifespan statistics

Bred rats recorded as deceased	291 rats (76 % of recorded bred rats)
⨽ declared with known date	⨽ 284 rats (97.6 %)
⨽ presumed dead	⨽ 7 rats (2.4 %)

Average lifespan of bred rats	22 months (♀: 23.9 months – ♂: 20 months)
⨽ infant mortality excluded	⨽ 24.5 months (♀: 26.4 months – ♂: 22.3 months)
⨽ accidents excluded	⨽ 25.4 months (♀: 27.3 months – ♂: 23.2 months)

Oldest bred rat	DEL-MOL Seren (deceased at 4 years, 19 days)

Death causes statistics

Primary death causes by decreasing frequency

23.24 %	Respiratory
19.01 %	Other
9.86 %	Infant mortality (up to 6 week old)
9.51 %	Unknown cause
8.45 %	Old age, natural death (from 24 month old minimum)
7.04 %	Accidents, traumas, poisonings
6.34 %	Neurological (brain, spinal cords, nerves)
4.58 %	Digestive
3.52 %	Cardiovascular
3.52 %	Eye, ear, mouth, face
3.17 %	Reproductive system
1.06 %	Urinary system (kidney, bladder)
0.7 %	Skin

Secondary death causes by decreasing frequency

14.44 %	Undetermined tumor (affected organ unknown)
10.21 %	Bronchitis, pneumonia
9.51 %	Undetermined cause (known date)
8.8 %	*Respiratory
8.45 %	*Old age, natural death (from 24 month old minimum)
5.28 %	*Infant mortality (up to 6 week old)
4.58 %	Stillborn
3.17 %	Lung tumor
3.17 %	*Neurological (brain, spinal cords, nerves)
2.46 %	Domestic accident (crush, door...)
2.46 %	Veterinary accident (anesthesia during a minor operation, medical error, etc.)
2.46 %	*Other
1.76 %	Digestive tumor (stomach, liver, pancreas, intestines...)
1.76 %	Heart failure, valvular disease
1.76 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
1.76 %	Pituitary tumor
1.41 %	Zymbal gland tumor
1.41 %	Other heart or vascular problem
1.41 %	Mammary tumor
1.06 %	Undetermined infection or abscess
1.06 %	Facial tumor (excluding Zymbal tumor)
0.7 %	Tooth abscess
0.7 %	Other respiratory trouble
0.7 %	Uterine tumor
0.7 %	Stroke
0.7 %	Epilepsy
0.7 %	Complications of gestation or parturition
0.7 %	Intestinal obstruction (excluding megacolon)
0.7 %	Other digestive trouble
0.35 %	Food poisoning
0.35 %	Renal failure
0.35 %	Liver failure
0.35 %	Digestive hemorrhage
0.35 %	Euthanasia without medical cause
0.35 %	Bladder tumor
0.35 %	Subcutaneous abscess
0.35 %	Sepsis
0.35 %	Other reproductive system disorder
0.35 %	Kidney tumor
0.35 %	Skin tumor, skin cancer
0.35 %	Hereditary megacolon
0.35 %	Pulmonary edema
0.35 %	Heart attack, infarct, pulmonary embolism
0.35 %	Digestive abscess
0.35 %	Generalized cancer, leukemia, lymphoma
0.35 %	*Eye, ear, mouth, face

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✓	06/05/2025	OPR-DEL Honeydukes	DEL Lo'ak	5
✓	29/12/2024	MIL-DEL Shadout Mapes	NAM-CPK Spirit	10
✓	19/12/2024	MIL-DEL Irulan Corrino	OPR Vlad	11
✓	05/12/2024	EPR Brocéliande	DEL Ramollo	12
✓	19/11/2024	DEL Pamela Rose	HDL-FAE Shadow Moon	16
✓	08/09/2024	OPR Mélitée du Mélampyre	DEL Othello	8
✓	25/06/2024	DEL The Secret of MIMH	MIL Alcatraz	12
✓	06/06/2024	NAM-CPK Kala	DNA-ARK Western Ramen	8
✓	26/05/2024	EPR Brocéliande	NAM Ghost in the Rain	11
✓	31/03/2024	HDL Mumière	DEL-LVM Vélociraptor	17

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	DEL61630F	DEL	From Western Woods to Beaversdam †		06/05/2025	1 mo	Infant mortality	♀
✓	DEL61631M	DEL	To Aslan's Camp	To Aslan's Camp	06/05/2025	3 mo	– alive –	♂
✓	DEL61629F	DEL	Winter Light	Winter Light	06/05/2025	3 mo	– alive –	♀
✓	DEL61628F	DEL	A Narnia Lullaby	A Narnia Lullaby	06/05/2025	3 mo	– alive –	♀
✓	DEL61627F	DEL	Miraphora	White Witch	06/05/2025	3 mo	– alive –	♀
✓	DEL49355F	DEL	Asphodèle †	Lolita	20/05/2017	24 mo	Pituitary tumor	♀
✓	DEL61295M	DEL	Dante	Giles	19/12/2024	8 mo	– alive –	♂
✓	DEL61294M	DEL	Virgile	Connor	19/12/2024	8 mo	– alive –	♂
✓	DEL58866M	DEL	Infinity		28/09/2023	22 mo	– alive –	♂
✓	DEL61297M	DEL	Yemi	Spikes	19/12/2024	8 mo	– alive –	♂