A golden-fish

Neighbor's lawn is always greener.
Food from Mum's bowl is always sweeter, even it's carrot.
He ate with me a full bowl of baby carrots.
5 minutes later, some funny sound came from his body, his stomach, his neck, his mouth.
3 seconds later, the bowl of carrots came out from his mouth, on to the sofa.
Here goes the healthy food. His stomach betrays his seemingly good choice on food.