Question

I am a four letter word. I am an animal. You use me to call your dear ones. Who am I?

Answer 1

dear is the 4 letter word.

Answer 2

The answer which satisfies this riddle is 'Dear.'
A four lettered word and with a little replacement in letters, it becomes- Deer which is an animal.
Also the word- 'Dear' is used to refer to our beloveds.