Lucky and Zorba

Lucky and Zorba Italian La gabbianella e il gatto literally The Little Seagull and The Cat is a 1998 Italian traditional animation film directed by Enzo DAl, based on The Story of A Seagull and The Cat Who Taught Her To Fly by Luis Seplveda. The movie was dubbed in English and aired on Toon Disney during the early 2000s.

Zorba promises despite his hesitations, then he goes to find his friends to try and help save Kengah. Zorba gets his friends but when they arrive to save the seagull its too late. Under her wing they find her egg, so Zorba tells them about the promise and the cats decide to help him by giving him some instructions found in encyclopedias in a nearby abandoned museum on taking care of the egg. Zorba then forces himself to gently sit on the egg and hatch it.Word soon spreads about a cat hatching a birds egg, until it reaches the ears of Zorbas love interest Bubulina and the towns cats archenemy Great Big Rat, who after hearing the news of the categg makes a plan to make all the towns cats his servants. The egg soon hatches and the cats decide to name the newborn Lucky. Lucky lives with the cats believing to be a cat herself. Her belief soon disappears when YoYo, a red kitten jealous of Lucky because of all the attention and advantages she gets, tells her that shes a bird and that her adoptive father wants to eat her. ........

Source: Wikipedia