The reason you feel bad after killing a bug is that you have sympathy and because of the fact that murdering is wrong and it has to do with your Mirror Neurons in your brain.
It can also because you feel sympathy and value other living things and don't want to kill them senselessly.
Bugs don't feel pain when you squash them but bugs do feel a sort of irritation feeling when they are squished.
Bugs can feel a type of pain but it's not the same type of pain that humans feel.
Bugs and insects do feel pain but the pain they feel is slightly different than what humans feel.
And researchers found that insects, and fruit flies in particular, feel something akin to acute pain called “nociception.”
When they encounter extreme heat, cold or physically harmful stimuli, they react, much in the same way humans react to pain.
Bugs and insects do have tiny brains.
Bugs and insects also have little brains known as “ganglia” spread out across their bodies.
The bugs and insects can see, smell, and sense things quicker than humans.
The bugs brains help them feed and sense danger faster, which makes them incredibly hard to kill sometimes.
Bugs do have feelings and do feel lover and show affection and love to each other.
Bugs can and do feel love and can also show affection towards each other.
Bugs and other insects express anger, terror, jealousy and love, by their stridulation.
The smartest insect is the honeybee.
Honey bees are considered the smartest insect, and there are several reasons that justify their place at the top.
First, honey bees have an impressive eusocial (socially cooperative) community.
Insects certainly display complex and apparently intelligent behavior.
They navigate over long distances, find food, avoid predators, communicate, display courtship, care for their young, and so on.
The complexity of their behavioral repertoire is comparable to any mammal.
Insects do have a memory as insects also have a brain and they have a pretty memory as well.
Insects are smart and have a considerable ability to memorize.
There is a strong correlation between mushroom body size and memory in many insects as well as between the size of the mushroom bodies and behavioral complexity.
You can drown some bugs.
However not all bugs will drown when you try to drown them.
Also in reality most bugs actually suffocate rather than actually drown when they die of a drowning.
Not all insects drown in water.
In fact, quite a few live there for at least part of their lives.
Insects breathe through holes in the sides of their bodies.
If they can't get air in through the holes, they will suffocate.
And most insects can survive under water (or in saturated soils) for short duration's.
In some ways, insects breathe like us and in other ways, insects breathe in a completely different way.
If humans don't receive oxygen, they can die within a few minutes, but almost all insects can survive without oxygen for many hours.
Insects have tiny brains inside their heads.
They also have little brains known as “ganglia” spread out across their bodies.
The insects can see, smell, and sense things quicker than us.
Their brains help them feed and sense danger faster, which makes them incredibly hard to kill sometimes.