References – AN 10.177: With Jānussoṇi 
“Is it possible to dedicate merit to our four-legged companions after they pass?” Answered by Ajahn Pasanno. [Animal ] [Merit] [Grief] [Death] // [Generosity]
Sutta: AN 10.177: Jāṇussoṇī
Death and Dying [2014], Session 1, Excerpt 19
“If beings are reborn immediately, how does ritual [sharing of merit] benefit the person who has passed?” Answered by Ajahn Pasanno. [Rebirth] [Ceremony/ritual] [Merit] [Death] // [Theravāda] [Realms of existence] [Goodwill]
Sutta: AN 10.177: Jāṇussoṇī
Death and Dying [2014], Session 1, Excerpt 24
“If a family member who has passed turns into a hungry ghost, how might one help them when they’re in that realm?” Answered by Ajahn Pasanno. [Family] [Rebirth] [Ghost ] [Compassion] [Death] // [Merit]
Sutta: AN 10.177: Jāṇussoṇī
Follow-up: “Does it work the same way if the person hasn’t made much merit?” [Kamma] [Skillful qualities] [Unskillful qualities] [Human]