Information is taken from the game and may change or differ over time. Last updated .
Statistics
Native to the northern USA and Canada, the grizzly bear (or Ursus arctos horribilis) is a subspecies of the brown bear.
A grizzly can be identified by its thick, brown fur, a large shoulder hump, straight snout and rounded ears. They have strong front legs with long claws used for digging and hunting.
They can grow extremely large, though there is a lot of variation in size between different populations. The average male measures 2.2m long in head-body length and weighs 240kg, while an average female measures 1.8m in head-body length and weighs 160kg.
- Wild grizzly bears hibernate for 5 to 7 months a year; they will eat huge amounts before hibernating to gain enough weight to survive this time without eating.
- The 'hump' visible on a grizzly bear's back is a large amount of muscle that bears use when digging dens or hunting prey.
- Grizzly bears can gain 180kg of weight when preparing for hibernation.
- In the wild each cub in a grizzly bear litter may have a different father.
- Grizzly bears love to eat moths, and will make the extra effort to find moths by climbing to high altitudes and overturning rocks.
Habitat
Minimum habitat requirements
Planned population
Space
Barrier
Terrain
Environment
Preferred group ranges
Social
Grizzly bears are solitary, the only exception being a mother with her cubs. They only interact with each other to mate or fight over mates. They may be seen in close quarters when there is a desirable food source, such as gathering at a river's edge during the salmon spawning season. However, bears will usually ignore each other if they come across one another.
Bamboo Feeder
Block of Frozen Fish
Block of Frozen Fruit
Fixed Roller Feeder - Large
Foraging Wall
Frozen Blood Pumpkin
Grazing Ball Feeder
Melon Feeder
Tree Scatter Feeder
Bobbin
Bobbin Drum
Fire Hose Ball
Herb Scent Marker
Ice Block
Large Ball
Prey Scented Sack
Rubbing PillarRelease
Release requirements
Mixed Group
Release Groups can only be released via Conservation Projects or Quick Release.
Maternal Family Group
Solitary Male
Conservation
Assessed as Least Concern today, the grizzly bear is present in only a small area of its former range across North America. Historically, European settlement as well as bounty programmes in the 19th and 20th centuries decimated populations to a few hundred bears by the 1970s. Today, populations in national parks are recovering, but the grizzly remains under threat from infrastructure development, climate change, human-wildlife conflict and poaching.
Conservation actions consist of habitat protection and management, human-wildlife conflict mitigation and legal protection. As part of a recovery plan, core ecosystems in their range are identified, and large, interconnected landscapes that can support viable populations are preserved. To reduce wildlife conflict, bear-proof infrastructure and public awareness about safe food storage practices are applied.
Efforts also include proposals for future reintroductions into historic habitats such as the North Cascades.
Research
| Level | Unlocks | Bonus | Research gate |
|---|---|---|---|
| 1 | Thriving Requirement 1: at least 12 objects or plants with the Climbable tag; Grizzly Bear Fact Sheet | ||
| 2 | Thriving Requirement 2: Water Surface Area; Fertility Level 1 | Fertility (+15%) | |
| 3 | Thriving Requirement 3: Food Grade 2; Release groups and release to the wild | ||
| 4 | Thriving Requirement 4: at least 15 objects or plants with the Tree Litter tag | ||
| 5 | Thriving Requirement 5: at least 3 objects or plants with the Fruit Bearing tag; Fertility Level 2 | Fertility (+30%) |
Conservation topics
Life
Reproduction
Lifecycle
Body
2.65 m
2.25 m 220 kg 165 kgBreeding
From May to June, male grizzly bears track females using the scent of their urine. When a male and female meet, they will play together; wrestling and pawing each other before mating. Males will be aggressively fighting off rivals in order to mate with a female.
Females undergo delayed implantation, so that the young are born during hibernation in the winter, after a pregnancy of about 6 months. Litters range from 1 to 4 cubs. The cubs will search out milk and suckle from their mother until the end of hibernation, when they will leave the den and have their first solid food. The mother won’t mate while she is caring for her offspring, and may also not produce a new litter for a few years after their dispersal.
The bear cubs stay with their mother until they are 2 to 3 years old, at which point they will leave to establish their own territory. However, they aren’t sexually mature until 5 years old, and males may only be strong enough to secure a mate until 7 years or older.