MIL – Millo & cie 

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Statistics

Breeding statistics

Breeding activity period	2019–2026 (6 years, 8 months)

Declared litters	86 litters, 750 pups
⨽ internal (born in the rattery)	⨽ 70 litters, 592 pups
⨽ external (other contributed litters)	⨽ 16 litters, 158 pups

All rat records	749 rats
⨽ females	⨽ 375 females (50.1 %)
⨽ males	⨽ 374 males (49.9 %)

Litter statistics

Average mother age	227 days (7.4 months)
Average father age	444 days (14.6 months)
Average litter size	8.7 pups per litter
Average sex ratio	0.997 (about 1 female for 1 male)

Lifespan statistics

Bred rats recorded as deceased	382 rats (64.1 % of recorded bred rats)
⨽ declared with known date	⨽ 354 rats (92.7 %)
⨽ presumed dead	⨽ 28 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	⨽ 22.3 months (♀: 23.5 months – ♂: 21 months)

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

Death causes statistics

Primary death causes by decreasing frequency

22.88 %	Respiratory
18.93 %	Old age, natural death (from 24 month old minimum)
12.71 %	Unknown cause
11.3 %	Other
8.76 %	Neurological (brain, spinal cords, nerves)
7.06 %	Eye, ear, mouth, face
5.93 %	Accidents, traumas, poisonings
5.08 %	Reproductive system
3.11 %	Cardiovascular
2.54 %	Digestive
0.56 %	Urinary system (kidney, bladder)
0.56 %	Skin
0.56 %	Muscles and skeleton

Secondary death causes by decreasing frequency

18.93 %	Bronchitis, pneumonia
18.93 %	*Old age, natural death (from 24 month old minimum)
12.71 %	Undetermined cause (known date)
4.52 %	Mammary tumor
3.39 %	Pituitary tumor
3.11 %	Undetermined tumor (affected organ unknown)
3.11 %	*Respiratory
2.54 %	Stroke
2.26 %	Facial tumor (excluding Zymbal tumor)
2.26 %	Generalized cancer, leukemia, lymphoma
2.26 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
1.69 %	Heart attack, infarct, pulmonary embolism
1.69 %	Zymbal gland tumor
1.69 %	*Neurological (brain, spinal cords, nerves)
1.41 %	Virus, epidemic outbreak, immune deficiency (SDA, Sendai, Tyzzer...)
1.41 %	Undetermined infection or abscess
1.13 %	Suffocation, choking
1.13 %	Digestive tumor (stomach, liver, pancreas, intestines...)
1.13 %	*Other
0.85 %	Domestic accident (crush, door...)
0.85 %	Veterinary accident (anesthesia during a minor operation, medical error, etc.)
0.85 %	Sepsis
0.85 %	Facial abscess (excluding teeth and Zymbal gland)
0.85 %	Other tumor (salivary, spleen, adrenal, thyroid...)
0.85 %	Hemorrhage (exaggerated relative to the context, coagulation disorder, hemophilia)
0.85 %	*Digestive
0.56 %	Brain infection, encephalitis, meningitis
0.56 %	Complications of gestation or parturition
0.56 %	Tooth abscess
0.56 %	Other heart or vascular problem
0.56 %	Dental malocclusion
0.56 %	Urinary or kidney infection
0.56 %	*Eye, ear, mouth, face
0.28 %	Liver failure
0.28 %	Subcutaneous abscess
0.28 %	Other respiratory trouble
0.28 %	Otitis, ear abscess
0.28 %	Other accident or trauma
0.28 %	Bone tumor
0.28 %	Pulmonary edema
0.28 %	Other known cause fitting no other category
0.28 %	Falls, fractures, head or spinal cord trauma (excluding fights)
0.28 %	Digestive hemorrhage
0.28 %	Lung tumor
0.28 %	Progressive spinal cord damage, degenerative paralysis
0.28 %	Retro-orbital abscess
0.28 %	Brain tumor
0.28 %	Joint or bone infection, septic arthritis
0.28 %	*Skin
0.28 %	*Accidents, traumas, poisonings

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✗	14/01/2026	MIL Ruma	MIL Pegasus	9
✓	08/08/2025	RB. Imara	MIL Dave	10
✓	29/07/2025	RMS-MGR Mercredi	MIL-VIC Shogoun	10
✓	19/07/2025	MIL Pivoine	VIC Lazar	8
✓	19/07/2025	MIL Pahara	MIL-VIC Poussifeu	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

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	MIL62136F	MIL	Carlota		14/01/2026	2 mo	– alive –	♀
✓	MIL62139M	MIL	Albi		14/01/2026	2 mo	– alive –	♂
✓	MIL62138M	MIL	Kyle		14/01/2026	2 mo	– alive –	♂
✓	MIL62142M	MIL	Ming		14/01/2026	2 mo	– alive –	♂
✓	MIL62141M	MIL	Mixe		14/01/2026	2 mo	– alive –	♂
✓	MIL62137M	MIL	Shade		14/01/2026	2 mo	– alive –	♂
✓	MIL62134F	MIL	Shine		14/01/2026	2 mo	– alive –	♀
✓	MIL62135F	MIL	Thia		14/01/2026	2 mo	– alive –	♀
✓	MIL62140M	MIL	Arlequin		14/01/2026	2 mo	– alive –	♂
✓	MIL61567M	MIL	Splot		13/05/2025	10 mo	– alive –	♂