Yes, Saturn has a magnetic field that is produced by electric currents. I guess that also means it is going to be a real challenge for scientists to enter Saturn in the future.
Uranus.
The magnetosphere is the region around a planet where the solar wind is significantly altered due to the magnetic field of the planet. Planets with a magnetic field arising from internal processes are said to have a global magnetic field. A Global magnetic field will produce a magnetosphere. Six of the planets have global magnetic fields, and hence some magnetosphere; Mercury, Earth, Jupiter, Saturn, Uranus, Neptune. Mars did have one, but when the core froze, that ended the geodynamo. Venus, the near twin of Earth, does not have a geomagnetic field and that is quite perplexing. It too lacks a geodynamo and no one knows why. There are remnant magnetic fields for Mars and Venus, but they are too small to have any significant effect on the solar wind. Jupiter and Saturn have huge magnetic fields and there are only general theories as to what causes them. Uranus has a middling magnetic field, more in the range of Earth's field. The moon has no significant field. We have no idea whether Pluto does or not, but it would be unlikely.
No. Venus (even though it has liquid in its core) does not have a magnetic field because of its slow rotation, making the liquid not electrically conducting. Mars does not have a magnetic field, although measurements by space probes have found magnetically active spots because of the iron found in the surface rocks.
Yes, all of them do, except for Mars and Venus. Neither Mars nor Venus have a "global magnetic field". Mars has only traces of weak magnetism and Venus is probably even less magnetic.Neither plants nor animals have any significant magnetic field.
I assume you mean "planets". Yes, other planets have magnetic fields, too. Jupiter, for example, has a very strong magnetic field.
No. Earth's magnetic field only affects earth, not other planets.
Mars has gravity, as do all planets, but not a magnetic field.
Not all of the planets within our solar system have a magnetic field. Venus and Mars are the only ones that don't have a magnetic field (all other planets do have one).
Scientists believe Jupiter has a liquid metallic hydrogen core which allows it to form a strong magnetic field. Trapped magnetic particles form radio waves which are amplified by the planet's many moons and which are released into space.
The dynamo. For terrestrial planets, the dynamo is a molten core of nickel-iron. Mercury and Earth have fairly strong dynamos and therefore fairly strong magnetic fields. Venus and Mars do not, and have only weak magnetic fields.
more fluid = stronger magnetic field.
other planets
Other planets
Neptune, Uranus, Saturn, Jupiter, and Earth all have magnetic fields. Mercury has a very weak magnetic field.
no mars magnetic field is not strong because it is far away from the sun than earth.
Planets are too far from each other to have any observable interaction of their magnetic fields.