Police were called to an address on Frank Street, in the Little Horton area of Bradford, at 7.26pm yesterday and had to shoot the animal so paramedics could treat the boy.
A West Yorkshire Police spokesman said:
The child was then taken to Leeds General Infirmary where his condition this morning is described as stable, with injuries which are not believed to be life-threatening.
Inquiries are now ongoing as to the breed of the dog and to establish whether any criminal offence has been committed.
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The woman, called Karen, was in tears as she spoke about the xenophobic attacks she has suffered since the EU referendum.
Representatives for Scotland and Northern Ireland said they were concerned that they will be pulled out of the EU by English voters.
This is not hyberbole.