‏البيوع : Hadeeth No:3820 Salim b. Abdullah reported on the authority of his father that Allaah's Messenger (sallAllaahu alayhi wa sallam) said: Whosover amongst the owners of the house keeps a dog other than one meant for watching the herd or for hunting loses two qirat of his deeds every day....

‏البر والصلة والآداب‏ : Hadeeth No:6346 This hadith has been reported on the authority of Ibn 'Umar through another chain of transmitters. And Ibn 'Umar reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: A woman was tormented because of a cat which she had tied and thus allowed it neither to eat or drink nor set it free...