mayeb she developed an allergie to one of the ingredients...

in my case I can´t eat egg at all... but I eat thing that contain egg... soemtimes I get lumps sometimes I don´t... I think it´s the quantity involved or just how I´m feeling that day who knows

just keep an eye on her and see if they become more frequent... if so... you might wanna switch back... unless hse´s in pain I see no inconvenience with lumps rather than being annoying....

some dogs have tuna allergies.....