I believe that all living things have a spirit/soul or whatever you wish to call it and that is what 'visits' this plane of existence occasionally. I have had experiences which I have posted on here before so I am 100% convinced that there is something that can come forward into this world.
I've experienced loads of happenings. Recently Some I have had actually had me frozen on the spot. Have had my head scudded, couldn't move was terrified, hard said to lifted my hair. Had been crying bad day with depression. Live on own. I believe my dad did it . Then picture fell of wall in bedroom hard actually cracked skirting. Picture in tact , nail still in wall. Crapped it. Then minutes later I sense someone at side of bed and I daren't turn round. Now if things happen I speak to him. That just a few of the things after dad died 5 yr ago.