Phew! This is going to be a long list...
Giant anteater : Stroked / played with / walked / have carried in arms a baby giant anteater a good few times. This particular individual even once put its tongue all over my face , up my nose, and down my ear which was a bizarre experience. The fur and tail feels like the bristles of a scrubbing brush , very coarse , the tongue is extraordinary, the claws are "blunt" but sharply formidable like ice picks.
Tamandua: Picked one up and it proceeded to "bite" me which consisted of sucking part of my hand which as they are toothless was not painful , the prehensile tail was wrapped around my wrist and was fascinating as I felt the strength of this evolutionary appendage. The fur is coarse but less so than the giant anteater and like its much larger cousin the claws are formidably sharp.
Pied tamarin : Stroked the long clawed hand of one particular individual many times , it was part of a game that this individual would initiate.
Howler monkey : Have stroked / held hands with / had them wrap their prehensile tail around my hand and played with several infants.
Agouti : Have stroked briefly.
Capybara : Have hand fed and stroked
Armadillo : Have held , stroked , been clawed by. Beautiful species , heavy and very curious to touch its carapace which feels bizarre , clawing was somewhat painful but wasn't delivered hard enough to draw blood just scratch marks.
Spider monkey : Have stroked / held hands with , played with , had them wrap their prehensile tail around my hands , head , neck and hair. One infant individual wrapped his tail around a tuft of my hair and yanked it out once.
Capuchin monkey: Have stroked / held hands with.
Boa constrictor : Have stroked , handled, held , been bitten by and had around my neck.
Royal python : Have stroked , handled, held , had around my neck.
Green Iguana: Have stroked , handled, held , been tail lashed/ whipped by.
Chameleon (I think a Parsons) : Have held and had perch on hand.
Axolotl : Have "stroked" , been "bitten" by and briefly picked up many of these.
Tarantulas of various species : Have held.
Emperor scorpions : Have held.
Praying mantids of various species : Have held and been bitten by one.
Banded king snake: (Had a pet one of these) Have stroked , handled, held and had around my neck.
Milk snake : (Had a pet one of these) Have caught, stroked , handled, held , been bitten by and had around my neck.
Ornate horned toad : Have stroked , handled, held , been bitten by.
Fire salamander : Have held briefly on many occasions.
Iberian frog : Have held briefly on many occasions.
Iberian midwife toad : Have held briefly on many occasions
Emerald tree boa : Have caught , stroked , handled , held, been bitten by.
Morelets crocodile : Have caught , stroked , handled and held.
American crocodile : Have stroked , handled and held.
Burmese python : Have stroked , handled, held and had around my neck.
African Sand boa : Have stroked , handled, held.
Leopard gecko : Have stroked , handled , held , been bitten by.
Bearded dragon: Have stroked , handled , held.
Tokay gecko : Have attempted to handle one and been bitten by.
Bosc monitor : Have handled and stroked.
Tegu : Have handled and stroked.
Mata mata turtle : Have picked up , handled and held.
Red footed tortoise : Have stroked , handled , held.
Yellow footed tortoise: Have stroked , handled , held.
Maned wolf: Was able to stroke , hold ears and listen to its heartbeat of one once while it was undergoing a health check under anesthesia. The texture of its fur reminded me of a wool duster.
Jaguar : Have stroked a captive one , an unforgettable experience. The fur is smooth and the most beautiful IMO of all the big cats.
Lowland tapir: Stroked and patted one several times , the fur is smooth but rather oily / greasy while the mane is much more coarse and bristly like a broom.
Asiatic elephant : Have fed one by hand. Kind of an intimidating experience if I'm honest but the trunk is incredible in its dexterity.
Giraffe : Have fed one by hand and had its tongue wrap around my hand. Incredible dexterity of their tongues.
Dromedary camel : Have stroked and picked one up (an infant / calf of course). Fur woolly and picking it up it was strangely light to carry.
Pampas deer : Have stroked one.
Green headed tanager : Have hand fed and had one perch on my hand.
Saffron toucanet : Have hand fed and hand one perch on my hand.
Barn owl : Have stroked and had perch on hand.
Caracara : Have stroked and had perch on hand.
Harris hawk: Have had perch on hand.
Amazon parrots of various species : Have hand fed and hand perch on my hand and been bitten by one.
Macaws of various species : Have stroked and had perch on my hand.
Parakeets of various species : Have stroked and had perch on my hand and been bitten by a few too.