MIL – Millo & cie 

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Statistics

Breeding statistics

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

Declared litters	80 litters, 688 pups
⨽ internal (born in the rattery)	⨽ 66 litters, 552 pups
⨽ external (other contributed litters)	⨽ 14 litters, 136 pups

All rat records	697 rats
⨽ females	⨽ 352 females (50.5 %)
⨽ males	⨽ 345 males (49.5 %)

Litter statistics

Average mother age	227 days (7.5 months)
Average father age	447 days (14.7 months)
Average litter size	8.6 pups per litter
Average sex ratio	0.98 (about 1 female for 1 male)

Lifespan statistics

Bred rats recorded as deceased	368 rats (65.6 % of recorded bred rats)
⨽ declared with known date	⨽ 341 rats (92.7 %)
⨽ presumed dead	⨽ 27 rats (7.3 %)

Average lifespan of bred rats	21.8 months (♀: 23 months – ♂: 20.6 months)
⨽ infant mortality excluded	⨽ 21.8 months (♀: 23 months – ♂: 20.6 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

22.58 %	Respiratory
19.65 %	Old age, natural death (from 24 month old minimum)
12.32 %	Unknown cause
11.14 %	Other
8.8 %	Neurological (brain, spinal cords, nerves)
7.33 %	Eye, ear, mouth, face
6.16 %	Accidents, traumas, poisonings
5.28 %	Reproductive system
2.93 %	Cardiovascular
2.35 %	Digestive
0.59 %	Skin
0.59 %	Urinary system (kidney, bladder)
0.29 %	Muscles and skeleton

Secondary death causes by decreasing frequency

19.65 %	*Old age, natural death (from 24 month old minimum)
18.77 %	Bronchitis, pneumonia
12.32 %	Undetermined cause (known date)
4.69 %	Mammary tumor
3.23 %	Pituitary tumor
3.23 %	Undetermined tumor (affected organ unknown)
3.23 %	*Respiratory
2.64 %	Stroke
2.35 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
2.35 %	Facial tumor (excluding Zymbal tumor)
2.35 %	Generalized cancer, leukemia, lymphoma
1.76 %	Zymbal gland tumor
1.76 %	*Neurological (brain, spinal cords, nerves)
1.47 %	Undetermined infection or abscess
1.47 %	Virus, epidemic outbreak, immune deficiency (SDA, Sendai, Tyzzer...)
1.47 %	Heart attack, infarct, pulmonary embolism
1.17 %	Suffocation, choking
1.17 %	Digestive tumor (stomach, liver, pancreas, intestines...)
1.17 %	*Other
0.88 %	Hemorrhage (exaggerated relative to the context, coagulation disorder, hemophilia)
0.88 %	Domestic accident (crush, door...)
0.88 %	Veterinary accident (anesthesia during a minor operation, medical error, etc.)
0.88 %	Facial abscess (excluding teeth and Zymbal gland)
0.88 %	Other tumor (salivary, spleen, adrenal, thyroid...)
0.88 %	*Digestive
0.59 %	Other heart or vascular problem
0.59 %	Brain infection, encephalitis, meningitis
0.59 %	Complications of gestation or parturition
0.59 %	Tooth abscess
0.59 %	Dental malocclusion
0.59 %	Urinary or kidney infection
0.59 %	*Eye, ear, mouth, face
0.29 %	Liver failure
0.29 %	Brain tumor
0.29 %	Subcutaneous abscess
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 %	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 %	*Skin
0.29 %	*Accidents, traumas, poisonings

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✗	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
✓	25/06/2024	DEL The Secret of MIMH	MIL Alcatraz	12

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	MIL59688M	MIL	Mochi		08/09/2023	23 mo	– alive –	♂
✓	MIL61546M	MIL-VIC	Rox		26/03/2025	5 mo	– alive –	♂
✓	MIL61561M	MIL	Finnick		13/05/2025	3 mo	– alive –	♂
✓	MIL58127F	MIL	Mavis †		03/05/2023	26 mo	Bronchitis, pneumonia	♀
✓	MIL58899F	MIL	Corail †		08/09/2023	19 mo	Bronchitis, pneumonia	♀
✓	MIL60519M	MIL	Bourriquet †		04/06/2024	12 mo	Bronchitis, pneumonia	♂
✗	MIL60520M	MIL	Alfonse †		04/06/2024	14 mo	Digestive hemorrhage	♂
✓	MIL60228F	MIL	Babouche		23/04/2024	16 mo	– alive –	♀
✓	MIL60226F	MIL	Iris		23/04/2024	16 mo	– alive –	♀
✓	MIL60225F	MIL	Melrose		23/04/2024	16 mo	– alive –	♀