Best Practice Question

Hi, I’m recreating the form above in Contact Form 7 and I need some advice on how to do this.

Form Area I need assistance with:
-I have 3 Drop Down Menus
-each set of items in each group is dependent on the previous selection
-I know I need to use a Select and Tags to organize my options so that I can set up conditional logic

Do I need to set up a Select and a Conditional Field group for each option?

ex.
Chose a Pet, cat , dog, pig
Choose a Colour, red, green, blue
Where is the pet, here, there, nowhere

Would it look like this?

[select Pet "Cat " "Dog " "Pig"]
[group Cat inline "Red" "Green" "Blue"][/group]
[group Dog inline "Red" "Green" "Blue"][/group]
[group Pig inline "Red" "Green" "Blue"][/group]
[group Red inline "Here" "There" "Nowhere"][/group]
[group Green inline "Here" "There" "Nowhere"][/group]
[group Blue inline "Here" "There" "Nowhere"][/group]

Or would I need more Selects to make logics work later?
[select Cat “Red” “Green ” “Blue”]
[select Dog “Red” “Green ” “Blue”]
[select Pig “Red” “Green ” “Blue”]

Is there an example anyone has I can follow?

The page I need help with: [log in to see the link]