If you're looking for manga similar to t+pazolite: Tobidase! TO THE COSMIC!!, you might like these titles.
Imagine a parallel species of creature on Earth, descended from Squirrels instead of Apes. They are super intelligent and are waiting for their moment to take over from us evolved apes--after all, we fight wars and they do not. But then two events change everything. One of these "0Men" decided to plot an invasion of Human Earth, and the other is young Ricky--one of the race of "0Men" but raised as human since infancy in Japan.
Once upon a time, a creature named Enka tried to destroy everything on Earth. It was eventually slain by humans; but before dying Enka proclaimed that one day its child would return to the planet, spreading fear and despair throughout all humanity. Now, thousands of years later, DNA tests have identified six 'children of Enka'. Only one of them is dangerous, but nobody knows which one (and killing them all would be mean!) Instead, 'Operation Cozy Family' is born! Normal human Ouka Midarezaki is forced into marrying Kyouka, one of the children of Enka; and together they play the roles of 'father' and 'mother' for the other children. But will family bonding and love really be enough to prevent the destruction of the planet?
Cows have died out and are now made using human DNA. They can speak and look similar to humans, but people still eat them and treat them as cows. After his father was eaten, Lamda the cow decides to run away. Unfortunately he is caught, but before that he helps a little boy, Mitsuhiko. The boy then insists Lamda become his servant instead of being eaten. When the Black Plague hits Mitsuhiko, he is in danger of dying because the only cure is cow's meat and every cow except Lamda is gone.
Once upon a time, a creature named Enka tried to destroy everything on Earth. It was eventually slain by humans; but before dying Enka proclaimed that one day its child would return to the planet, spreading fear and despair throughout all humanity. Now, thousands of years later, DNA tests have identified six 'children of Enka'. Only one of them is dangerous, but nobody knows which one (and killing them all would be mean!) Instead, 'Operation Cozy Family' is born! Normal human Ouka Midarezaki is forced into marrying Kyouka, one of the children of Enka; and together they play the roles of 'father' and 'mother' for the other children. But will family bonding and love really be enough to prevent the destruction of the planet?
On the moon, there is an advanced civilization of bunny people who used to be identical to humans, but after incorporating themselves with bunny genes, transformed into docile creatures. The result is a society where AI are entrusted with all choices, from the content of meals to how each minute of leisure time should be spent. Amongst this society is a bunny girl named Uko who dislikes this lifestyle, complaining "Let me choose for myself!!" One day, Uko decides to flee the moon and head to Earth where she meets Hane, a bunny girl investigating life on Earth. On this planet with many strange customs, these two will...!?