Red kangaroo has the ability to freeze the development of an embryo until the previous joey is able to leave the pouch. This is known as diapause, and will occur in times of drought and in areas with poor food sources. The composition of the milk produced by the mother varies according to the needs of the joey. In addition, red kangaroo mothers may "have up to three generations of offspring simultaneously; a young-at-foot suckling from an elongated teat, a young in the pouch attached to a second teat and a blastula in arrested development in the uterus". The kangaroo has also
Phantom kangaroo Bennett's wallaby. In 2013 in Oklahoma a kangaroo was reportedly recorded by hunters in a field. The video was published on the website YouTube, and prompted speculation that the animal may be a pet kangaroo who went missing in the state just over a year earlier. Also in 2013, The Ridgefield Press reported that a motorist in North Salem, New York captured on video what he thought was a kangaroo, and published the video on their website. The newspaper noted that escaped wallabies, smaller than kangaroos, were known in Westchester County, which encompasses North Salem. Several people in the county