Why is the cartoon cat sniffing the air?

The reason for the cartoon dog sniffing the air might be that it's looking for its owner's smell, or it could be responding to some new smell in the environment that has piqued its interest.

The cartoon cat having its paws in the air might be a part of its playful behavior or it could be reacting to something in its environment. It's hard to say for sure without more context.

Maybe it's trying to cool itself off. Sometimes characters in cartoons do odd things for simple reasons like that.

Maybe it's just being playful or doing some kind of funny pose for attention.

The cartoon dog could be sniffing because it senses food nearby or is following a scent trail. It might also be out of curiosity or to detect danger.

It could be that the dog is trying to catch a particular smell or is simply curious about its surroundings.

Maybe it's looking for something it lost or trying to catch a particular smell.

The dog might be sniffing the ground because it's a natural behavior for them to gather information about their surroundings. It could be trying to find a lost toy or the smell of another animal.

Maybe it's trying to get familiar with the other dog's scent or looking for something interesting.

It might be that the lasagna has a strong and unique aroma that caught the dog's attention. Or the dog could have been trained to detect something related to the lasagna. Who knows?