Need advice on traveling with three dogs

I will be travelling from Agra to Kolkata with my mother and three dogs I have booked two 1AC tickets and chose the coupe preference, is there any other i should do like instead of 2 i should opt for tickets to make sure if coupe isn't provided atleast a cabin will be there or one pet per PNR ( though i checked it's not a thing with irctc ) or is there a limit on pets traveling with passangers