When they are searching for Reggie, Maggie has to sniff the bandanna he left behind so she could get his scent. But she had been with him the previous 48 hours, and it had only been less than an hour since Reggie had left.
Maggie is a female dog, but she always pees forward instead of backwards.
Despite being strays, all of Reggie's friends look clean and frequently groomed.
The "narrator" dog, voiced by a male actor, is clearly played by a female dog.
It is lovely that Maggie, an Australian shepherd, is voiced with an Australian accent. However, the breed was developed in the USA and is wholly an American breed.