Ricardo Flores thinks viruses may be "the most important faction of the [planet's] biomass" and that a viroid-like entity is a prime candidate for the first replicon on Earth. Viroids are subviral world parasites, non-protein coding RNAs. Excerpts of our interview follow.
Rarely is anemia related to iron deficiency in pets, as it is in many women. Iron supplementation should be avoided, unless your pet is one of the very rare cases where actual iron deficiency is present.