Likely not, unless you want them to. Spirits tend to keep to themselves unless they feel they are welcome outside of their Keeper. Spirits respect boundaries and will not manifest or interact with other members of your family unless you, or they, have given them permission to do so. This includes pets, who often sense and interact with spirits faster than humans do. With pets they may know something is there, but won’t know what it is unless you give them permission to interact with your pets.