Which animal in Group B can be added to Group A? Why? It has nothing to do with spelling or pronunciation.

Group A:
garter snake
giraffe
goat
guppy

Group B:
gar
gecko
golden eagle
gorilla

I am a set of three words, all with the same four letters.
First I am a type of carriage.
Then switch my middle letters, and I am a cover often useful on a diamond.
Now switch my end letters ...
When you see me, you also see hair.

What are the words?

Complete the series by making a selection from the pool.

Series: Hermes, Aphrodite, Gaea, Ares, Zeus, Cronus, Uranus, Poseidon, ?

Pool: Athena, Dionysus, Eros, Hades, Hephaestus, Hera

Five words that contain AB as a letter-pair have had all of their other letters removed and placed into a pool. Put those letters back in their proper places. What are the words?

-AB--, ---AB, AB----, AB-----, -AB----

Pool: C, E, E, I, I, I, L, L, N, P, Q, R, S, S, T, T, T, U, U, Y

What is the meaning of this rebus?

marcus Brutus
john wilkes Booth
Billy the kid
Bonnie parker
clyde Barrow

Black as night I can be,
Until my Mother sits on me;
Then clear as ice I become
In the rough, thank you Mum.

What am I?