polyploid

Wikipedia:

• Polyploidy
• Few animals are known to do this. Some that are:
  • the red vizcacha rat (Tympanoctomys barrerae) — It's tetraploid (four copies of each chromosome), and has 102 chromosomes.

Other educational material:

• Nature — Scitable — Polyploidy

Organisms that are polyploid:

TODO: The following organisms have exceptionally large genomes. Check to see if any of these are polyploid:

• Paris japonica, a flowing plant
• Polychaos dubium, a freshwater amoeboid
• marbled lungfish