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	677 rats
⨽ females	⨽ 343 females (50.7 %)
⨽ males	⨽ 334 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	0.974 (about 1 female for 1 male)

Lifespan statistics

Bred rats recorded as deceased	339 rats (61 % of recorded bred rats)
⨽ declared with known date	⨽ 312 rats (92 %)
⨽ presumed dead	⨽ 27 rats (8 %)

Average lifespan of bred rats	22 months (♀: 23.1 months – ♂: 20.9 months)
⨽ infant mortality excluded	⨽ 22 months (♀: 23.1 months – ♂: 20.9 months)
⨽ accidents excluded	⨽ 22.7 months (♀: 23.9 months – ♂: 21.5 months)

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

Death causes statistics

Primary death causes by decreasing frequency

21.47 %	Respiratory
20.83 %	Old age, natural death (from 24 month old minimum)
11.86 %	Unknown cause
11.22 %	Other
8.65 %	Neurological (brain, spinal cords, nerves)
6.73 %	Eye, ear, mouth, face
6.73 %	Accidents, traumas, poisonings
5.45 %	Reproductive system
3.21 %	Cardiovascular
2.24 %	Digestive
0.64 %	Skin
0.64 %	Urinary system (kidney, bladder)
0.32 %	Muscles and skeleton

Secondary death causes by decreasing frequency

20.83 %	*Old age, natural death (from 24 month old minimum)
17.31 %	Bronchitis, pneumonia
11.86 %	Undetermined cause (known date)
4.81 %	Mammary tumor
3.53 %	Pituitary tumor
3.53 %	Undetermined tumor (affected organ unknown)
3.53 %	*Respiratory
2.56 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
2.56 %	Stroke
2.56 %	Facial tumor (excluding Zymbal tumor)
1.92 %	Zymbal gland tumor
1.92 %	Generalized cancer, leukemia, lymphoma
1.6 %	Undetermined infection or abscess
1.6 %	Virus, epidemic outbreak, immune deficiency (SDA, Sendai, Tyzzer...)
1.6 %	Heart attack, infarct, pulmonary embolism
1.6 %	*Neurological (brain, spinal cords, nerves)
1.28 %	Suffocation, choking
1.28 %	Digestive tumor (stomach, liver, pancreas, intestines...)
1.28 %	*Other
0.96 %	Hemorrhage (exaggerated relative to the context, coagulation disorder, hemophilia)
0.96 %	Domestic accident (crush, door...)
0.96 %	Veterinary accident (anesthesia during a minor operation, medical error, etc.)
0.64 %	Other heart or vascular problem
0.64 %	Complications of gestation or parturition
0.64 %	Tooth abscess
0.64 %	Facial abscess (excluding teeth and Zymbal gland)
0.64 %	Other tumor (salivary, spleen, adrenal, thyroid...)
0.64 %	Urinary or kidney infection
0.64 %	*Digestive
0.32 %	Liver failure
0.32 %	Brain tumor
0.32 %	Subcutaneous abscess
0.32 %	Brain infection, encephalitis, meningitis
0.32 %	Bone tumor
0.32 %	Sepsis
0.32 %	Other known cause fitting no other category
0.32 %	Other accident or trauma
0.32 %	Dental malocclusion
0.32 %	Pulmonary edema
0.32 %	Falls, fractures, head or spinal cord trauma (excluding fights)
0.32 %	Lung tumor
0.32 %	Progressive spinal cord damage, degenerative paralysis
0.32 %	Retro-orbital abscess
0.32 %	*Skin
0.32 %	*Eye, ear, mouth, face
0.32 %	*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

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✗	MIL58960F	MIL-VIC	Cruella †		13/10/2023	14 mo	Generalized cancer, etc.	♀
✗	MIL59867M	MIL	Kaamelott †		08/04/2024	13 mo	Other tumor	♂
✗	MIL58900F	MIL	Kida †		09/09/2023	18 mo	Brain infection, etc.	♀
✗	MIL61541F	MIL-VIC	Obalie		26/03/2025	3 mo	– alive –	♀
✗	MIL61554F	MIL	Eshe		13/05/2025	2 mo	– alive –	♀
✓	MIL61579M	MIL	Merlin		18/05/2025	2 mo	– alive –	♂
✓	MIL60581F	MIL-DEL	Starfire	Liette Kynes	25/06/2024	12 mo	– alive –	♀
✓	MIL60582F	MIL-DEL	Raven	Darwi Odrade	25/06/2024	12 mo	– alive –	♀
✓	MIL61540F	MIL-VIC	Melyss		26/03/2025	3 mo	– alive –	♀
✓	MIL61542M	MIL-VIC	Bubon		26/03/2025	3 mo	– alive –	♂