There are a lot of hadith that are pretty down on images. Here's just a couple:
Narrated Aisha:
(the wife of the Prophet) I bought a cushion having on it pictures (of animals). When Allah's Messenger (ﷺ) saw it, he stood at the door and did not enter. I noticed the sign of disapproval on his face and said, "O Allah's Messenger (ﷺ)! I repent to Allah and His Apostle. What sin have I committed?' Allah's Messenger (ﷺ) said. "What is this cushion?" I said, "I have bought it for you so that you may sit on it and recline on it." Allah's Messenger (ﷺ) said, "The makers of these pictures will be punished on the Day of Resurrection, and it will be said to them, 'Give life to what you have created (i.e., these pictures).' " The Prophet (ﷺ) added, "The Angels of (Mercy) do not enter a house in which there are pictures (of animals).
http://sunnah.com/bukhari/67/116Abu Zur'a reported:
I visited the house of Marwan in the company of Abu Huraira and he found pictures there. whereupon he said: I heard Allah's Messenger (ﷺ) as saying: Allah, the Glorious and Exalted, said: Who is a more wrongdoer than one who tries to create creation like Mine creation. Let him create an atom or a grain of wheat or that of barley. This hadith has been transmitted on the authority of Abu Zur'a and he said: Abu Huraira went to the house of Sa'ld or Marwan which they had built in Medina and he (Abu Huraira) saw a painter who had been painting pictures in his house, whereupon he told that Allah's Messenger (ﷺ) had said like this, but he made no mention of the words:" Let him create the grain of barley."
http://sunnah.com/muslim/37/155And then, of course, there a lot of different versions saying something along the lines of an angel will not enter a house with a dog or a picture inside.