I am confused about how to write a correct sentence for the situation below.

1) Andy puts a cat in three boxes - A, B and C.

One cat only and the same cat. First, he puts the cat in Box A then Box B then Box C.

Can I say, Andy puts a cat in three boxes, A, B and C, individually?

2) Andy puts a cat in three boxes - A, B and C.

So, there is a total of 3 cats.

Can I say, Andy puts a cat in three respective boxes, A, B and C?

Plz advice. Thank you.