The animal with the smallest brain relative to its body size is the Etruscan shrew. Despite its tiny size, its brain makes up about 10% of its body mass.
The smallest planet is MercuryMercury
it is the smallest planet
KOALA has the smallest brain to skull ratio. Only about 60 % is gray matter, rest is fluid.
Pluto used to be the smallest planet, but it was deemed to not be a planet. The smallest planet now is Mercury within our Solar System
Mars is the second smallest planet, Mercury is the smallest.
Mercury was listed as the second smallest planet. Since Pluto lost its status as a planet Mercury is now the smallest planet.
Mercury is the smallest of the eight planets, but is the closest. The furthest planet is Neptune, but its not the smallest.
No, Earth is actually the fifth-largest terrestrial planet in our solar system. Mercury is the smallest terrestrial planet.
No. Charon is not a planet; it is the largest moon of the dwarf planet Pluto. The smallest planet is Mercury.
The smallest recognized planet is Mercury.
Mercury is now the smallest 'true' planet in our solar system. Pluto was the smallest planet before the definition of a planet was revamped. Now, if you include dwarf and minor planets, the next biggest is Eris.