So I wanted to make sure I have the differences covered. Animal viruses attach to a receptor protein to recognize the host cell, enter the host cell via endocytosis, and bring their capsid into the host cell. [i did not know the bolded part is true: is it?] Bacteriophages, viruses that infect bacteria, also attach to a receptor on the host cell membrane, but enter by landing/attachment/contracting/penetrating and injecting. Is it true bacteriophages leave their capsid outside, animal viruses bring their capsid into the cell, but both have receptor-specific methods of attachment?