Andrias japonicus, a species of large salamanders native to Japan, growing up to a meter in length.

Hylochoerus meinertzhageni, a large pig living in the jungles of West and Central Africa.

Any of certain large house spiders, formerly in species Tegenaria duellica, now in three species Eratigena atrica, Eratigena duellica, and Eratigena saeva.

plural of giant wood rail

The earliest known ancestor of the giant panda, Ailuropoda microta, now extinct.

plural of Japanese giant salamander

Riftia pachyptila, a large marine worm found around the floor of the Pacific Ocean near geothermal vents.

(astronomy) a very large radio galaxy; a double radio source having an overall projected linear length exceeding 2 megaparsecs (or more specifically, 2×h₅₀⁻¹ Mpc)

(astronomy) The region of the Hertzsprung-Russell diagram populated by evolving low to medium-mass stars.

plural of giant forest genet