Can someone tell me how to make this gif into a signature?

[RebeccaR19]

I am trying to make a signature for the April 2015 Bunnies group. I have a gif, but I don't know how to convert it to a signature that anyone can use on here. Can anyone on here help me? Here is the gif.

 

[RebeccaR19]

I put into an online gif code generator and I have a URL Code
https://imgflip.com/gifgenerator

But the other ones I've seen are somehow linked back to baby and bump and the thread. I am so confused.