I'm assuming you mean that the animals would be replaced by Pokemon when you say "if our world instantly became a world full of Pokemon," which would mean that there would be no Pokemon Centers, Pokeballs, potions, and other items that are essential to the Pokemon universe.
Originally Posted by RNG_Reporter
In that case, the world would be in complete turmoil. Pokemon are more intelligent and powerful than regular animals, so there would be an increase in human deaths due to encounters with Pokemon such as Salamence, Gengar, etc. Also, the government would probably try to violently capture these Pokemon (due to the lack of Pokeballs) in order to study them, which would also create chaos.
Considering that there are no Pokeballs, it would be very difficult to find a partner. Only friendly and weak Pokemon such as a Zigzagoon or something would be willing to become "partners" with a human.
2. Which Pokemon(s) would be the most sought after for protection or to be the best partners to use in a world full of Pokemon.
Snake? Snake? Snaaaaaaake!!!