A feeding bottle (10) comprises a container (16), a teat (12) and a collar(14) to screw the teat (12) onto and seal the container (16). A vent assembly(18) is mounted between the teat (12) and the container (16) and includes avent tube (22) passing down to a position close to the base of the container(16) and having a one way valve (34) allowing air to pass into the container(16) on application of suction to the teat (12) but preventing liquid flowinginto the vent tube (22), together with a valve flange (36) acting as an anti-choke member.