This is a fantastic book. It isn’t very long, but it covers multiple different tales of interspecies adoption. Here is a brief overview of the table of contents, so, you get a good idea on what stories it covers.
*Note that there are many other stories along with these.
The Greyhound and her fawn, her fox kits, her bunnies The Hen and her ducklings The Springer Spaniel and her lambs The hen and her falcon chick The Border Collie and his Vietnamese Pot-Bellied Piglets The Owl and her gosling The Goat and her wolf pup The Tamarin monkey and his twin baby marmosets