The question of whether animals see ghosts is a topic that has caused much debate and doubt among people for centuries. Here are some important points on the subject:

1. Developed senses
Many animals, such as dogs and cats, have more developed senses than people. Their sense of smell, sight and hearing can allow them to sense things that we cannot.
For example, cats can see in dark conditions much better than we can, so they may see things that we don't.

2. Unexplained behaviors
There are cases in which animals behave in a strange way or react to things that are not visible to the human eye. For example, dogs may bark at "something" that we can't see, or cats look up into the air as if they see something.
Such behavior has fueled speculation about the ability of animals to see ghosts or supernatural beings.
3. Scientific explanation
Science has not confirmed the existence of ghosts, and there is no tangible evidence that animals see ghosts.
Strange behaviors may be explained by smells that cannot be felt, hidden noises or even health problems.

4. Cultural beliefs
Many cultures have different beliefs about animals that can see ghosts. For example, cats are sometimes seen as mysterious creatures with connections to other worlds.
5. Open question
This question remains open, and it is possible that when we better understand the animal world and their special senses, we will be able to get clearer answers.
Summary
In conclusion, there is no scientific evidence that animals see ghosts. Strange animal behaviors may be due to a variety of other reasons. However, the subject remains intriguing and of interest to many people.