First version
Christmas time is once a year
Every critter holds it dear
Every animal big or small
Christmas means so much to us all

Second version
Christmas time is once a year
Every critter holds it dear
Every animal big or small
Christmas means so much to us all

It's once a year, it's Christmas time
And it happens once a year
It's once a year, it's Christmas time
When we hear about how Christmas only comes
Once a year

Third version
Christmas time is once a year
Every creature holds it dear
Every animal big or small
Christmas means the world to us all

It's once a year, it's Christmas time
When we hear about how Christmas only comes
Once a year