MIL – Millo & cie 

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Statistics

Breeding statistics

Breeding activity period	2019–2025 (6 years, 2 months)

Declared litters	82 litters, 714 pups
⨽ internal (born in the rattery)	⨽ 67 litters, 566 pups
⨽ external (other contributed litters)	⨽ 15 litters, 148 pups

All rat records	713 rats
⨽ females	⨽ 359 females (50.4 %)
⨽ males	⨽ 354 males (49.6 %)

Litter statistics

Average mother age	227 days (7.4 months)
Average father age	448 days (14.7 months)
Average litter size	8.7 pups per litter
Average sex ratio	0.986 (about 1 female for 1 male)

Lifespan statistics

Bred rats recorded as deceased	372 rats (66.2 % of recorded bred rats)
⨽ declared with known date	⨽ 345 rats (92.7 %)
⨽ presumed dead	⨽ 27 rats (7.3 %)

Average lifespan of bred rats	21.7 months (♀: 22.9 months – ♂: 20.5 months)
⨽ infant mortality excluded	⨽ 21.7 months (♀: 22.9 months – ♂: 20.5 months)
⨽ accidents excluded	⨽ 22.4 months (♀: 23.6 months – ♂: 21.1 months)

Oldest bred rat	MIL-VIC Extremis (deceased at 3 years, 6 months, 14 days)

Death causes statistics

Primary death causes by decreasing frequency

22.61 %	Respiratory
19.42 %	Old age, natural death (from 24 month old minimum)
12.46 %	Unknown cause
11.01 %	Other
8.7 %	Neurological (brain, spinal cords, nerves)
7.25 %	Eye, ear, mouth, face
6.09 %	Accidents, traumas, poisonings
5.22 %	Reproductive system
3.19 %	Cardiovascular
2.61 %	Digestive
0.58 %	Urinary system (kidney, bladder)
0.58 %	Skin
0.29 %	Muscles and skeleton

Secondary death causes by decreasing frequency

19.42 %	*Old age, natural death (from 24 month old minimum)
18.84 %	Bronchitis, pneumonia
12.46 %	Undetermined cause (known date)
4.64 %	Mammary tumor
3.19 %	Pituitary tumor
3.19 %	Undetermined tumor (affected organ unknown)
3.19 %	*Respiratory
2.61 %	Stroke
2.32 %	Facial tumor (excluding Zymbal tumor)
2.32 %	Generalized cancer, leukemia, lymphoma
2.32 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
1.74 %	Heart attack, infarct, pulmonary embolism
1.74 %	Zymbal gland tumor
1.74 %	*Neurological (brain, spinal cords, nerves)
1.45 %	Virus, epidemic outbreak, immune deficiency (SDA, Sendai, Tyzzer...)
1.45 %	Undetermined infection or abscess
1.16 %	Suffocation, choking
1.16 %	Digestive tumor (stomach, liver, pancreas, intestines...)
1.16 %	*Other
0.87 %	Domestic accident (crush, door...)
0.87 %	Veterinary accident (anesthesia during a minor operation, medical error, etc.)
0.87 %	Facial abscess (excluding teeth and Zymbal gland)
0.87 %	Other tumor (salivary, spleen, adrenal, thyroid...)
0.87 %	Hemorrhage (exaggerated relative to the context, coagulation disorder, hemophilia)
0.87 %	*Digestive
0.58 %	Other heart or vascular problem
0.58 %	Brain infection, encephalitis, meningitis
0.58 %	Complications of gestation or parturition
0.58 %	Tooth abscess
0.58 %	Dental malocclusion
0.58 %	Urinary or kidney infection
0.58 %	*Eye, ear, mouth, face
0.29 %	Otitis, ear abscess
0.29 %	Sepsis
0.29 %	Bone tumor
0.29 %	Other accident or trauma
0.29 %	Other known cause fitting no other category
0.29 %	Pulmonary edema
0.29 %	Digestive hemorrhage
0.29 %	Falls, fractures, head or spinal cord trauma (excluding fights)
0.29 %	Lung tumor
0.29 %	Progressive spinal cord damage, degenerative paralysis
0.29 %	Retro-orbital abscess
0.29 %	Liver failure
0.29 %	Brain tumor
0.29 %	Subcutaneous abscess
0.29 %	*Skin
0.29 %	*Accidents, traumas, poisonings

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✗	29/07/2025	RMS-MGR Mercredi	MIL-VIC Shogoun	10
✗	19/07/2025	MIL Pivoine	VIC Lazar	8
✓	18/05/2025	MIL Melusine	MIL Finilac	8
✓	13/05/2025	MIL Eteria	MGR Arald	14
✓	04/04/2025	MIL Narissa	MGR-MIL Naos	12
✓	26/03/2025	RB. Imara	MIL Tiplouf	7
✓	24/10/2024	MIL Elone	MIL-VIC Monarque	10
✓	27/09/2024	IND Brona	MIL Glyde	10
✓	26/09/2024	ANG-MIL Ayla	MIL Echo	11
✓	25/08/2024	MGR-MIL Flora	VIC Tyrell	3

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	MIL61550M	MIL	Carapuce		18/05/2025	4 mo	– alive –	♂
✓	MIL61564M	MIL	Bulbizarre		13/05/2025	4 mo	– alive –	♂
✓	MIL59050F	MIL	Nocturne  †		22/10/2023	21 mo	Heart attack, etc.	♀
✓	MIL60737F	MIL	Luciole		26/09/2024	12 mo	– alive –	♀
✓	MIL61064F	MIL	Marla		24/10/2024	11 mo	– alive –	♀
✓	MIL60741F	MIL	Narissa		27/09/2024	12 mo	– alive –	♀
✓	MIL60226F	MIL	Iris †		23/04/2024	16 mo	Undetermined cause	♀
✓	MIL59688M	MIL	Mochi		08/09/2023	24 mo	– alive –	♂
✓	MIL59868M	MIL	Clyde †		08/04/2024	16 mo	Bronchitis, pneumonia	♂
✓	MIL60520M	MIL	Alfonse †		04/06/2024	14 mo	Digestive hemorrhage	♂