Books that are available at major bookstores in urban areas were used as references for the numbers of babies/eggs written on our products. Multiple books and reference materials were used since there were not many books available that focus on/specialize in numbers of babies/eggs of animals.
In case the numbers of babies/eggs were not found on the books and reference materials for certain species, information available online were referenced. There is a possibility that online information may lack credibility when they do not cite bibliographies. For that reason, when we relied on online information, we referenced from homepages created by official government authorities, official homepages of other book publishing companies, and homepages created by organizations/corporations that are specialized in animals, that are working towards protections, researches and marketing promotion of animals.
The number of babies/eggs written on our products may differ from the number of babies/eggs written on the books and encyclopedia you have. Following may be the possible reasons:
- Specific species that was researched and studied may differ in each research/study case, creating differences in number of babies/eggs as a result. (e.g. mouse, rabbit, chameleon, squid have many subspecies depending on countries/region. Cod for example has different subspecies such as Pacific cod or Alaska pollack, but some books may simply write “cod” for both subspecies.)
- Researchers who wrote the books may have conducted their researches on number of babies/eggs in different study periods, locations, seasons, etc.
- Years when researches and studies were conducted may be different (the later the publication year was, the better the technologies/techniques that were used during the researches and studies)
- Some books and homepages may not clearly state whether the numbers they list are the number of babies/eggs that one animal produces throughout its lifetime or in one round. For this card game, we assume all the numbers are for animals to produce in one round, however, there may be some numbers that refer to the numbers of babies/eggs animals produce throughout their lifetime. All reasonable measures had been taken to ensure the accuracy of information stated on our products, however, we ask for your understanding towards the above-mentioned points, and that our products should not be regarded as research/academic references but rather a fun game to enjoy with everyone.
Bibliographies / websites
All reference materials used are the books that were published in Japan. All reference websites are also in Japanese language.
・「ＮＨＫ for school」ＨＰ―「イセエビ」、「アメリカザリガニ」