Can amoeba harm humans or other animals?

Yes, certain types of amoebas can harm humans and other animals. For example, the Naegleria fowleri amoeba can cause a rare but severe brain infection known as primary amoebic meningoencephalitis (PAM), typically contracted through contaminated water. Additionally, Entamoeba histolytica can cause amoebic dysentery, leading to severe gastrointestinal issues in humans. While many amoebas are harmless, it's essential to be cautious in environments where pathogenic species are present.