MIL – Millo & cie 

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Statistics

Breeding statistics

Breeding activity period	2019–2025 (6 years)

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	694 rats
⨽ females	⨽ 352 females (50.7 %)
⨽ males	⨽ 342 males (49.3 %)

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	0.972 (about 1 female for 1 male)

Lifespan statistics

Bred rats recorded as deceased	365 rats (64.9 % of recorded bred rats)
⨽ declared with known date	⨽ 338 rats (92.6 %)
⨽ presumed dead	⨽ 27 rats (7.4 %)

Average lifespan of bred rats	21.8 months (♀: 23 months – ♂: 20.7 months)
⨽ infant mortality excluded	⨽ 21.8 months (♀: 23 months – ♂: 20.7 months)
⨽ accidents excluded	⨽ 22.5 months (♀: 23.6 months – ♂: 21.2 months)

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

Death causes statistics

Primary death causes by decreasing frequency

21.89 %	Respiratory
19.82 %	Old age, natural death (from 24 month old minimum)
12.43 %	Unknown cause
11.24 %	Other
8.88 %	Neurological (brain, spinal cords, nerves)
7.4 %	Eye, ear, mouth, face
6.21 %	Accidents, traumas, poisonings
5.33 %	Reproductive system
2.96 %	Cardiovascular
2.37 %	Digestive
0.59 %	Skin
0.59 %	Urinary system (kidney, bladder)
0.3 %	Muscles and skeleton

Secondary death causes by decreasing frequency

19.82 %	*Old age, natural death (from 24 month old minimum)
18.05 %	Bronchitis, pneumonia
12.43 %	Undetermined cause (known date)
4.73 %	Mammary tumor
3.25 %	Pituitary tumor
3.25 %	Undetermined tumor (affected organ unknown)
3.25 %	*Respiratory
2.66 %	Stroke
2.37 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
2.37 %	Facial tumor (excluding Zymbal tumor)
2.37 %	Generalized cancer, leukemia, lymphoma
1.78 %	Zymbal gland tumor
1.78 %	*Neurological (brain, spinal cords, nerves)
1.48 %	Undetermined infection or abscess
1.48 %	Virus, epidemic outbreak, immune deficiency (SDA, Sendai, Tyzzer...)
1.48 %	Heart attack, infarct, pulmonary embolism
1.18 %	Suffocation, choking
1.18 %	Digestive tumor (stomach, liver, pancreas, intestines...)
1.18 %	*Other
0.89 %	Hemorrhage (exaggerated relative to the context, coagulation disorder, hemophilia)
0.89 %	Domestic accident (crush, door...)
0.89 %	Veterinary accident (anesthesia during a minor operation, medical error, etc.)
0.89 %	Facial abscess (excluding teeth and Zymbal gland)
0.89 %	Other tumor (salivary, spleen, adrenal, thyroid...)
0.89 %	*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
0.3 %	Liver failure
0.3 %	Brain tumor
0.3 %	Subcutaneous abscess
0.3 %	Otitis, ear abscess
0.3 %	Sepsis
0.3 %	Bone tumor
0.3 %	Other accident or trauma
0.3 %	Other known cause fitting no other category
0.3 %	Pulmonary edema
0.3 %	Falls, fractures, head or spinal cord trauma (excluding fights)
0.3 %	Lung tumor
0.3 %	Progressive spinal cord damage, degenerative paralysis
0.3 %	Retro-orbital abscess
0.3 %	*Skin
0.3 %	*Accidents, traumas, poisonings

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✓	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
✓	18/06/2024	MIL Nocturne	MIL Lemon	10

Recently modified rats

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State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	MIL58960F	MIL-VIC	Cruella †		13/10/2023	14 mo	Generalized cancer, etc.	♀
✓	MIL58572M	MIL	Emil		02/02/2023	30 mo	– alive –	♂
✓	MIL57802F	MIL	Plume †		02/02/2023	26 mo	Facial abscess	♀
✓	MIL61540F	MIL-VIC	Melyss		26/03/2025	4 mo	– alive –	♀
✓	MIL60310M	MIL-VIC	Kolya †		13/10/2023	15 mo	Generalized cancer, etc.	♂
✓	MIL61582M	MIL	Emile †		02/02/2023	21 mo	Undetermined cause	♂
✓	MIL60276F	MIL	Basile †		08/04/2023	19 mo	Bronchitis, pneumonia	♀
✓	MIL60275F	MIL	Bella †		08/04/2023	23 mo	Dental malocclusion	♀
✓	MIL60286M	MIL	Groot †		08/04/2023	17 mo	Undetermined cause	♂
✓	MIL60277F	MIL	Loca †		08/04/2023	21 mo	Bronchitis, pneumonia	♀