Hoffman J, Valencak TG (2020). "A short life on the farm: aging and longevity in agricultural, large-bodied mammals". GeroScience. 42 (3): 909–922. doi: 10.1007/s11357-020-00190-4. PMC 7286991. PMID 32361879.

Li, Mingzhou; Chen, Lei; Tian, Shilin; Lin, Yu; Tang, Qianzi; Zhou, Xuming; Li, Diyan; Yeung, Carol K. L.; Che, Tiandong; Jin, Long; Fu, Yuhua (1 May 2017). "Comprehensive variation discovery and recovery of missing sequence in the pig genome using multiple de novo assemblies". Genome Research. 27 (5): 865–874. doi: 10.1101/gr.207456.116. ISSN 1088-9051. PMC 5411780. PMID 27646534. Most pigs have rather a bristled sparse hair covering on their skin, although woolly-coated breeds such as the Mangalitsa exist. [4] For pigs, heat stress varies depending on their age and size. Young and growing pigs with the average body mass of 30 kilograms can tolerate temperatures up to 24°C (75°F) before starting to experience any heat stress, but after they have grown and are fattened to about 120kg, at which point they are considered ready for slaughter, their tolerance drops to just 20°C (68°F). [93]Corbet and Hill (1992), referred to in Wilson, D. E.; Reeder, D. M., eds. (2005). Mammal Species of the World: A Taxonomic and Geographic Reference (3rded.). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494. Groves, Colin P. (1995). "On the nomenclature of domestic animals". Bulletin of Zoological Nomenclature. 52 (2): 137–141. doi: 10.5962/bhl.part.6749. Biodiversity Heritage Library Sometimes, you only need to be away for a day or two. In this case, have multiple water bottles installed in your pet’s cage, so they have access to clean water at all times. Also, leave them enough food, and you are good to go.

Dooldeniya, M. D.; Warrens, A. N. (2003). "Xenotransplantation: Where are we today?". Journal of the Royal Society of Medicine. 96 (3): 111–117. doi: 10.1177/014107680309600303. PMC 539416. PMID 12612110.Pigs are currently thought to be the best non-human candidates for organ donation to humans, and to date they are the only animal that has successfully donated an organ to a human body. The first successful donation of a non-human organ to a human body was conducted on 15 September 2021, when a kidney from a pig was transplanted to a brain-dead human and immediately started functioning similarly to a human kidney. [107] [108] The procedure, led by Dr. Robert Montgomery, used a donor pig that was genetically engineered to not have a specific carbohydrate that the human body considers a threat– Galactose-alpha-1,3-galactose. [109] This followed an earlier major breakthrough when the carbohydrate was removed from genetically engineered mice. [110] Carl Zimmerman (15 October 2015). "Editing of Pig DNA May Lead to More Organs for People". The New York Times. Lander, Brian; Schneider, Mindi; Brunson, Katherine (2019). "A History of Pigs in China: From Curious Omnivores to Industrial Pork". Journal of Asian Studies. 79 (4): 865–889. doi: 10.1017/S0021911820000054. Rooting is known to also be used as a means of communication. [71] Nose rings that pierce the septum of the nose discourage rooting because they make the behavior painful. [ citation needed]

Warr, A.; etal. (2020). "An improved pig reference genome sequence to enable pig genetics and genomics research". GigaScience. 9 (6): giaa051. doi: 10.1093/gigascience/giaa051. PMC 7448572. PMID 32543654.World's 100 most destructive species named". The Independent. 21 November 2004. Archived from the original on 26 May 2022 . Retrieved 7 March 2017. Fresh water is as vital to your guinea pig’s health as food. Remember, guinea pigs eat a lot of dry food, most of which is fibrous. Their favorite is timothy hay. Because of how dry their food is, these little piggy’s need a lot of water to keep their digestive system working properly. Every once in a while, you may need to be away from your furry piggy for a few days or a few hours. Like other living beings, you must ensure your guinea pig has enough food and water. Folk, G.E.; Semken, H.A. (1991). "The evolution of sweat glands". International Journal of Biometeorology. 35 (3): 180–186. Bibcode: 1991IJBm...35..180F. doi: 10.1007/bf01049065. PMID 1778649. S2CID 28234765. So, realistically, you can always be away for a few days at a time, and if possible, nothing more than three days, which frankly, is pushing it.

As they get to know you, your guinea pig will become attached to you and even have fun with you. However, they don’t need you to survive as long as they have their basic needs met. With around 1billion individuals alive at any time, the domesticated pig is one of the most numerous large mammals on the planet. [46] [47] ReproductionFarmer, Chantal (2015). The gestating and lactating sow. The Netherlands: Wageningen Academic Publishers. ISBN 9789086868032. OCLC 899008362. Strom, Stephanie (2 January 2014). "Demand Grows for Hogs That Are Raised Humanely Outdoors". The New York Times . Retrieved 15 April 2015. Bazer, Fuller W.; Song, Gwonhwa; Kim, Jinyoung; Dunlap, Kathrin A.; Satterfield, Michael Carey; Johnson, Gregory A.; Burghardt, Robert C.; Wu, Guoyao (1 January 2012). "Uterine biology in pigs and sheep". Journal of Animal Science and Biotechnology. 3 (1): 23. doi: 10.1186/2049-1891-3-23. ISSN 2049-1891. PMC 3436697. PMID 22958877.