In my opinion, yes. Some alien races have peculiar appearances, except for some that are externally indistinguishable from humans and animals. But for now, it is unknown.
In my opinion, yes. Some alien races have peculiar-shaped heads.
If aliens exist, some alien races could possibly have simian characteristics, such as monkeys, gorillas, etc.
Yes. Some alien races have two hearts.
Two pupils in the eye would be eerie,and perhaps some alien races have them.
Some alien races, if they exist, may have five arms.
From the data we have, we have not discovered any alien races.
If aliens exist there could be some alien races that have reptavian characteristics.
Yes. Some alien races have multiple heads. But currently, it is unknown.
Yes. Some alien races have multiple hearts. But currently, it is unknown.
Yes. Some alien races have upside-down faces.
Yes. Some alien races have multiple legs. But currently, it is unknown.
If there are alien races they indeed might have multiple ears.