Mother Cell

The Mother Cell is a vector molecule that Reiden Global used in all of its products. The molecule caused rapid mutations in the animal kingdom, and eventually some humans as well.

It also caused major changes to the natural balance, forcing animals to no longer eat each other, and istead feed exclusively on humans. However, this didn't seem to cause any negative effects to the animals, as they can still be seen thriving in the second season.

List of several animals that changed by The Mother Cell:

pupil dilation (also called Delta Determinant)

loss of fear

hive mind

Aggression

Lions: remote communication

Bears: endoskeletons/ hard shell-like skin

Rats: asexual reproduction

Birds: each and any species can talk to each other

Ants: generate electricity

Moles and Sloths: earthquake generation

Snakes: poison generation by their shedding glass like skin

Lizards: ice generation