Examples of 3D-printed sensing devices for detecting vascular conditions in an animal body are described. A 3D-printed sensing device may comprise a binding layer to attach the 3D-printed sensing device to a part of the animal body. A sensor layer is extruded atop the binding layer. The sensor layer comprises a piezoresistive transducer to generate an electrical signal based on a pulse detected in the part of the animal body. In an example, the electrical signal is a binary signal having a logical high value at an instant of occurrence of the pulse and is agnostic of a strength of the pulse. An amplification module in the sensor layer may amplify the electrical signal and provide the amplified signal to a transmitter unit of the 3D-printed sensing device to transmit the amplified signal to a monitoring device associated with the 3D-printed sensing device.