Lifespans and Gestation Periods
The information below is derived from the Encyclopaedia
Britannica:
| Animal (General) | Maximum Lifespan* (in years) |
| Mammals | | Bat | 5-34
(varies by species)
| | Bear | 31 | | Cat | 21 | | Chimpanzee | 37 | | Dog | 34 | | Elephant | 57 | | Horse | 62 | | Human, Neanderthal | 20 | | Human, Neolithic | 20 | | Human, Classical Greece | 28 | | Human, Classical Rome | 28 | | Human, Medieval England | 33** | | Human, end of 18th Century | 37 | | Human, early 20th Century | 50 | | Human, circa 1940 | 65 | | Human, current | 77-79 (varies by region) | | Lion | 29 | | Mouse | 3 | | Ox | 30 |
| Birds | | Bluejay | 4 | | Canary | 24 | | Macaw | 64 | | Nightingale | 3.8 | | Pigeon | 69 |
| Reptiles | | Alligator | 56 | | Box turtle | 123 | | Giant tortoise | 177 | | Amphibians | | | Salamanders | 3-25 |
| Fish | | Eel | 6 | | Goldfish | 25 | | Sturgeon | 50 |
| Insects | | Ant | 15 | | Fruit fly | 0.1 (30-40 days) |
| Spiders | | Bird spider | 15 | | House spider | 0.01 (3-4 days) |
* Yes, we know that there are cats out there living to 100
years. However, it would be silly to say "average maximum
lifespan," since that sounds contradictory. However, there
is an upper age limit at which the vast majority of animals
will die. Animals living past that age are exceptions, and aside
from being old and wise are also incredibly snappy dressers.** Take a good look at all these human lifespans. For fantasy
roleplayers, specifically look at the medieval lifespan: an astounding,
whopping 33 years. What does this mean? Well, for one thing, the
likelihood of anyone living long enough to get gray hair was very
rare (see above bullet). People living to the point where they
begin to get wrinkles and gray hair were almost invariably considered
in some way either blessed or cursed. They were given status (ranging
from simple respect to full-blown mysticism) that we in the 1990s
wouldn't give even our own elderly parents. Secondly, unless there is some reason to expect advanced medical
procedures in a fantasy campaign, players will seldom become and
seldom encounter old men and women - the concept of what "old
age" means is very different. Disease, famine, war and other
factors all contributed to thirty somethings dying off at an alarming
rate. That age was almost always 100% fatal. Individuals with
a higher standard of living lived longer, but usually not by much. Think about it. Pigeons lived longer than we did back then.
| Animal
| Gestation Period (days)
| Animal
| Gestation Period (days)
|
| Camel |
406 |
Hyena |
110 |
| Cat |
62 |
Kangaroo |
40 |
| Cow |
280 |
Lion |
108 |
| Chimpanzee |
237 |
Mink |
50 |
| Dog |
62 |
Monkey, rhesus |
164 |
| Dolphin |
276 |
Mouse |
21 |
| Elephant, African |
640 |
Opposum |
13 |
| Ferret |
42 |
Orangutan |
245-275 |
| Fox |
52 |
Pig |
113 |
| Giraffe |
395-425 |
Rabbit |
32 |
| Goat |
151 |
Rat |
21 |
| Guinea pig |
68 |
Reindeer |
215-245 |
| Hamster |
16 |
Seal, northern fur |
350 |
| Hedgehog |
35-40 |
Sheep |
148 |
| Horse |
337 |
Skunk |
62 |
| Human |
266 |
Squirrel, grey |
44 |
| Goldfish |
In season (when female is fertile with eggs): April-September monthly spawning.
Eggs hatch four-14 days according to temperature
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