What constellation are you? I am Capricorn. How to say it in English?

What's your sign? /What constellation are you in? [What constellation are you? /Which constellation are you? ]

1. I am Capricorn.

2. My constellation is Capricorn. [My constellation is Capricorn]

Constellations can be replaced by constellations.

Zodiac;

What's your sign? What is your animal sign? ]

1. I am a (animal sign, for example, dog/dog) [I am a dog]

2. My zodiac is a dog [My zodiac is a dog]

My animal is a dog.

I was born in the year of the dog.