Im feeding raw and have for a while,during the cold months i struggles to keep weight on the dogs so i wanted to introduce a fat source,i read somewhere that a piece of lard would be sufficient and so cut a full block into 6 and fed one each ontop of their feed,the dogs kept their weight and as the warmer weather comes i took out the lard. Now a friend has since told me its the worse thing i could give to them as it puts extra fat on internal organs etc,i fully accept that bit for the amount they get i don't believe it does any harm,however,if it does,then what alternative fat source would you all reccomend or use?