I had a mare once who loved all baby creatures. She would lean down and snuffle my daughter’s head just like this.
One day I found her in the paddock with a gosling. She followed it around gently brushing it with her muzzle and breathing into his feathers. It looked like she was trying to soothe it (although I’m not sure the gosling got the message).
More cute photos and videos like this at Fly With Me Productions. Check it out!